УЗЕЛ ГЕРМЕТИЗИРУЮЩЕГО И ВЫПУСКНОГО КЛАПНА ДЛЯ АККУМУЛЯТОРНЫХ БАТАРЕЙ

... 1. Узел (1) герметизирующего и вентиляционного клапана для аккумуляторных батарей, содержащий по меньшей мере одну по существу трубчатую втулку (2), соединенную с крышкой (С) указанного аккумулятора и выполненную с возможностью сообщения наружной окружающей среды по меньшей мере с одним каналом (S), выполненным в указанной крышке (С); упругий колпачок (3), установленный на внешней поверхности указанной трубчатой втулки; причем колпачок имеет закрытый конец (5), открытый конец и трубчатый корпус (4), состоящий из двух примыкающих друг к другу цилиндрических частей (41, 42), отличающийся тем, что стенка части (41), прилегающая к закрытому концу, тоньше стенки части, прилегающей к открытому концу; при этом толщина стенки первой части одинакова по всей ее окружности, толщина стенки второй части одинакова по всей ее окружности, и обе части контактируют с внешней поверхностью указанной втулки; причем радиальная упругая деформация указанной первой части превышает таковую остальной части, тем самым ...

СИСТЕМЫ И СПСОБЫ ДЛЯ ПЛАСТИНЧАТОГО КЛАПАННОГО МОДУЛЯ И КЛАПАННОГО УЗЛА

... 1. Пластинчатый клапанный модуль, содержащий:корпус, включающий установочную поверхность, одну или более поверхностей уплотнения и один или более проточных каналов, ведущих от установочной поверхности к поверхностям уплотнения;одну или множество пластинчатых створок, расположенных над поверхностью уплотнения корпуса модуля; иодну или более стенок, противоположных корпусу из одной или множества пластинчатых створок.2. Пластинчатый клапанный модуль по п.1, в котором одна или более поверхностей уплотнения на корпусе модуля расположена по существу под прямым углом к установочной поверхности, так что поток текучей среды через пластинчатый клапанный модуль подвергается минимальному повороту.3. Пластинчатый клапанный модуль по п.1, в котором полость в корпусе упрочнена ребрами, которые могут также разделять полость на отдельные независимые проточные каналы.4. Пластинчатый клапанный модуль по п.1, в котором полость в корпусе упрочнена ребрами, концевые поверхности которых расположены на одном уровне ...

Filtervorrichtung, Filterelement sowie Verfahren zum Betrieb der Filtervorrichtung

Filtervorrichtung mit einem Filtergehäuseteil (10), das ein Filterelement (12) umfasst und das lösbar mit einem weiteren Filtergehäuseteil (20) verbindbar ist, wobei eine Ventileinrichtung (24) vorgesehen ist, die im miteinander verbundenen Zustand der Gehäuseteile (10, 20) einen Fluidweg freigibt und im getrennten Zustand der Gehäuseteile (10, 20) voneinander diesen zumindest teilweise sperrt, wobei die Ventileinrichtung (24) ein Ventilelement (26) aufweist, das über ein Ansteuerteil (28) mindestens eines der beiden Filtergehäuseteile (10, 20) und/oder des Filterelementes (12) betätigbar ist, wobei im verbundenen Zustand der Gehäuseteile (10, 20) das Ventilelement (26) öffnet und in deren voneinander getrenntem Zustand zumindest teilweise schließt, wobei das Ansteuerteil (28) einen nach außen konisch zulaufenden Aufsteuerdorn (34) aufweist und Bestandteil des auswechselbaren Filterelementes (12) ist und das Ventilelement (26) Bestandteil des weiteren Filtergehäuseteiles (20) ist, und wobei ...

DRUCKAUSGLEICHVENTIL

Fahrzeugüberdruckventil mit mittig befestigten Klappen und Methode zu seiner Herstellung

Vakuumpumpe

Die Erfindung betrifft eine Vakuumpumpe, insbesondere eine Flügelzellenpumpe, mit einem Pumpengehäuse, in welchem ein Saugraum vorgesehen ist, und einem in den Saugraum einmündenden Pumpengehäusedurchbruch, wobei im Pumpengehäusedurchbruch ein ins Freie oder in einen externen Unterdruckraum mündendes Saug-Rückschlagventil angeordnet ist, welches in einem topförmigen Ventilgehäuse untergebracht ist und das topfförmige Ventilgehäuse einen Gehäuseboden und einen Gehäusemantel aufweist, wobei der Gehäuseboden mit dem Gehäusemantel verbindbar ist.

Rückschlagventil

Proportionalventil

Proportionalventil mit einer zylindrischen Hülse (1), die über ihren Umfang verteilt mehrere Bohrungen (2) aufweist, durch welche Hydraulikmedium in eine zentrale Bohrung der Hülse (1) strömen kann, wobei sich in einer Innenwandung (4) der Hülse (1) ein Ringkanal (5) befindet, in welchen die Bohrungen (2) münden, welche mit einem Schließelement (6) geschlossen werden können, das aus einem zu einem Ring gebogenen Ringband (10) gebildet ist, wobei die Enden (15, 16) des Ringbandes (10) in der Einbaulage einander überlappen, wobei der Ringkanal (5, 7) mit einem Druck-, einem Tank- oder einem Arbeitsanschluss (P, T, A, B) verbunden ist. Proportional valve having a cylindrical sleeve (1) distributed over its circumference has a plurality of bores (2) through which hydraulic medium in a central bore of the sleeve (1) can flow, wherein in an inner wall (4) of the sleeve (1) a Ring channel (5), in which the bores (2) open, which can be closed with a closing element (6), which is formed from a ring band curved into a ring (10), wherein the ends (15, 16) of the annular band (10) overlap each other in the installed position, wherein the annular channel (5, 7) with a pressure, a tank or a working port (P, T, A, B) is connected.

NON-RETURN VALVE ASSEMBLY FOR INCONTINENCE DEVICES

A non-return valve assembly particularly for an incontinence device, includes a least three layers, the layers being secured together, the first layer being a sheet or film of perforated material, and the second layer is a sheet or film of material having cuts therein defining an array of flap valves. The third layer is a material having holes therein, each hole being in registry with an associated flap valve and being of a size to accommodate the flap of said valve. The flap valves may be arranged in a regular rectangular array and each flap of a valve is defined by three cuts in the sheet material, the cuts constituting three sides of a rectangle so that the flap of the valve can pivot out of the plane of the sheet material generally about a notional axis formed by the fourth side of the rectangle.

FLUID FLOW CONTROL VALVES

... 1365306 Check valves; damper piston valves GIRLING Ltd 7 Sept 1971 [8 Sept 1970] 42921/70 Headings F2V and F2S An hydraulic damper control valve for a damper piston 10 having a plurality of apertures 12, comprises a flexible annular valve member 17 which is formed with a small bleed hole 21 and which is engageable at its inner and outer peripheries with respective inner and outer seats 16 and 18, the inner valve seat 16 being constituted by a washer element 25 whilst the outer valve seat 18 is in the form of a projection integral with the piston 10. A guide member 15, which is separate from the inner valve seat and extends centrally through the valve member 17, is formed of plastics, ceramics or an alloy with a lateral flange 26 for limiting the movement of the valve member inner periphery, and with two sets of flow conducting channels 20 and 23. The guide member and washer element 25 are clamped together and are clamped between the piston 10 and an annular limit stop member 14, by way ...

SPECIAL FITTING FOR USING IN A GAS OR A FLUID TUBE

Self-actuated suction and pressure valve e.g. ring valve, for compressor, has valve spring loading sealing element against valve seat, and spring cup whose inner contour opens in shape of calotte from spring cup base

The valve has a valve seat (3), a valve stop (2), and a sealing element moving to and fro between the valve seat and the valve stop. A valve spring (11) is arranged in a spring cup (17) in the valve stop, and loads the sealing element against the valve seat. An inner contour of the spring cup opens in the shape of a calotte from a spring cup base. The inner contour in a region of the spring cup base has a smaller curvature than in a region of a spring cup opening.

VERSCHLUSSLAMELLE FUER EIN VENTIL MIT MEHREREN, KONZENTRISCH ANGEORDNETEN DURCHGANGSKANAELEN

VALVE FOR PISTON COMPRESSORS OR PUMPS

VALVE WITH SETBACK VALVE

COMPRESSOR

HOHLE VENTILPLATTE

Die hohle Ventilplatte (1) eines Kolbenkompressors für flüssigkeitsgekühlte Lamellenventile weist eine einzelne Halbschale (3) mit zylinderseitig offenen Kühlkanälen (4) auf, welche von einer zumindest entlang der Kühlkanäle (4) vorzugsweise verschweißten oder verklebten Lamellenplatte (2) überdeckt ist, die im Bereich der Saugöffnungen (5) jeweils eine herausgearbeitete, einseitig einstückig verbundene Sauglamelle (6) aufweist. Damit ist Herstellung und Montage vereinfacht und der Schadraum reduziert.

CHECK VALVE FOR FUEL TANK

Lamella valve, in particular for compressors

CHECK VALVE AS WELL AS VALVE WITH SUCH A CHECK VALVE

CHECK VALVE FOR MEDICAL INFUSIONSSCHLÄUCHE AND SUCH A THING

Active intake pressure control of downhole pump assemblies

ONE WAY ANTI-BACK FLOW VALVE

Valve with internal member

A valve with an internal member is disclosed which allows exhaled carbon dioxide to escape from a breathing circuit when the circuit gas pressure drops below a threshold pressure. The valve operates by occluding one or more ports under a relatively high pressure and opening the one or more ports under a relatively low pressure. The internal member is attached to the body of the valve at two or more locations on the internal member. The internal member moves in a direction perpendicular to the gas flow through the valve.

ONE WAY FLOW VALVE

BACK PRESSURE REGULATOR AND NON-RETURN VALVE

A back pressure regulator and non-return valve is provided herein. It includes a hollow plug having an open inlet end and a closed end having a central aperture therethrough. A closure cap is hermetically slidably disposed within the hollow plug. A plurality of outlet perforations are provided from the hollow plug, the apertures being disposed along helical paths along the outer periphery thereof. Finally, a tubular resilient diaphragm sleeve envelopes the apertured portion of the hollow plug, the resilient sleeve being secured to the hollow plug only adjacent the open inlet end thereof the tubular resilient diaphragm sleeve having walls of non-uniform thickness. Control of the outflow through an annular outflow path between the hollow plug and the tubular resilient diaphragm is provided by changing the effective length of the hollow plug and to alter the number of the outlet apertures in the effective length of the outlet plug remaining. This thereby increases the threshold gaseous pressure ...

LAMELLAR VALVE

CLOSING MEMBER FOR A RING VALVE

PRESSURE COMPENSATING VALVE

This invention relates to a pressure compensating valve and more particularly, but not exclusively, to a balanced pressure compensating valve, or regulator. The valve includes a chamber (6) for containing fluid, defined by a flexible barrier (2) trapped between first (3) and second (4) surfaces. A fluid inlet provides fluid to the interior of the chamber. A fluid outlet selectively allows fluid to pass out of the chamber. Movement of the first (3) and second (4) surfaces relative to each other causes change in contact between the flexible barrier and the first and second surfaces to selectively open the fluid outlet, in a first position, and occlude it between the flexible barrier and one of the surfaces, in a second position.

Pompe aspirante et foulante pulsatile pour la circulation de liquides

Schnellschlussvorrichtung an Luftdurchlassöffnungen für Schutzräume

Rückschlagventil für Rohrleitungen

Kolbenkompressor mit Ventilaggregat

Mehrringventil, insbesondere für Kolbenverdichter

Absperrorgan

VALVE.

VALVE.

VALVE FUER A RECIPROCATING PISTON COMPRESSOR OR A PUMP.

SAFETY DEVICE FOR HYDROPNEUMATIC CONTROL CIRCUIT.

PRESSURE CONTROL VALVE FOR A COMPRESSOR.

FLEXIBLE NON-RETURN VALVE

IMPROVEMENTS WITH THE VALVES HAS VIBRATING VALVE FOR INTERNAL COMBUSTION ENGINES

LAMELLAR VALVES

NON-RETURN VALVE FOR FUEL TANK

Clapet anti-retour pour réservoir de carburant comportant un organe d'obturation déformable (12) réalisé d'un seul tenant par moulage de matière plastique et conformé de manière à revenir par élasticité propre dans une position d'obturation au repos.

Compressor valve assembly has shutter in sections able to vibrate in different phases

La présente invention concerne une soupape de compresseur (1) comportant au moins une ouverture (9) formant orifice de soupape et un élément d'obturation (11) souple positionné sur le au moins un orifice de soupape pour commander l'écoulement de gaz à travers celui-ci. La soupape de compresseur est adaptée pour amener les parties de l'élément d'obturation à vibrer au moins sensiblement en déphasage pendant un fonctionnement de la soupape de compresseur.

Valve combined with blower of secondary air in internal combustion engines with uncatalysor with three ways

... a) Soupape combinée à soufflante d'air secondaire dans des moteurs à combustion interne avec un catalyseur à trois voies. b) Soupape combinée caractérisée en ce que l'organe de soupape de la soupape de débranchement est comprimé par un ressort de fermeture de soupape dans le sens de la fermeture de la soupape et par la pression différentielle entre la pression d'admission et la pression ambiante dans le sens de l'ouverture de la soupape et en ce que le ressort à lames du clapet de non retour présente des bras découpés en spirale et est bloqué au milieu entre la lame de soupape et le capteur de course.

SAFETY DEVICE FOR OIL AND AIR CONTROL CIRCUIT

AIR-INLET VALVE FOR CARBURETERS.

Dry hydrant siphon assembly

A siphon jet is attached to a dry hydrant which is in communication with a body of water to increase the flow of fluid to the dry hydrant and assist in overcoming the effects of atmospheric pressure and gravity in drawing the water. A pressurized fluid source can add fluid to the siphon assembly and this forces water from the body up the hydrant pipe. Also, the fluid from the pressurized fluid source can be added forward of a valve to fill the hydrant pipe which thus minimizes the duration of priming operations.

Reusable, evacuable enclosure for storage of clothing and the like

A reusable, evacuable enclosure comprising a bag with an opening in which to place compressible articles, such as clothing or linen, and a one-way valve in a surface of the bag. Compressible articles may be placed in the bag and sealed from the surrounding environment by placing a seal across the opening. The excess air in the bag may then be removed by placing a cylindrical attachment of a household vacuum cleaner over the one-way valve. Once the excess air is extracted, a cap is placed over the valve to ensure a permanent seal. Removal of excess air reduces the size of the compressible article and inhibits the growth of insects and bacteria, which may damage the contents of the bag. Moreover, the enclosure is impervious to moisture, and so inhibits the growth of mildew.

Exhaust port protector for air brakes

FLUID BALANCING RELIEF VALVE WITH GROOVED PROCESS SURFACE

A valve includes: a body including: a wall defining a process surface, a process void in the process surface adapted to communicate with fluid at process pressure, and at least two vent voids in the wall separate from the process void; an inlet port in fluid communication with the process void; and an outlet port in fluid communication with the vent void; a reference housing adapted to communicate with fluid at reference pressure; and a membrane constrained between the body and the reference housing with its process side substantially coplanar with the process surface. The process surface incorporates at least one groove therein which defines a flow path between the near vicinity of the process void and the near vicinity of the vent voids.

SINGULATION OF VALVES

A method and apparatus for the singulation of valve plates and/or assembled valves from a lead-frame are described. The method and apparatus utilizes an electric current to fuse tabs which join the valve plate and/or the assembled valve to the lead-frame. The valve comprises a first and second valve plate with offsetting apertures and a flap disposed and movable between the first and second plates.

Asymmetrische druckentlastende Entlüftung

Ventil (35, 37, 39, 41, 135, 137, 139, 141, 235, 237, 335, 337, 435, 437, 535, 537, 635, 637, 735, 737) zur Verwendung in einer druckentlastenden Entlüftungsanordnung (20, 120, 220, 320, 420, 520, 620, 720) für ein Fahrzeug, wobei das Ventil umfasst: ein Ventilgehäuse (26) mit einem eine Entlüftungsöffnung (30, 330, 730) ausbildenden Rahmen (28, 128, 328, 428, 728); und eine Klappe (34, 36, 38, 40, 134, 136, 138, 140, 234, 236, 334, 336, 434, 436, 534, 536, 634, 636, 734, 736) mit einem sich um die Entlüftungsöffnung (30, 330, 730) erstreckenden und diese abdeckenden Umfang (42, 142, 342, 442, 742), wobei der Umfang (42, 142, 342, 442, 742) eine an dem Rahmen (28, 128, 328, 428, 728) befestigte Scharnierkante (44, 244, 344, 544, 644) umfasst, wobei die Klappe (34, 36, 38, 40, 134, 136, 138, 140, 234, 236, 334, 336, 434, 436, 534, 536, 634, 636,...

TANK-SCHNELLVERBINDUNG MIT RÜCKSCHLAGVENTIL

Rückflussverhinderer

Die Erfindung betrifft einen Rückflussverhinderer (1), der in eine Gas- oder Flüssigkeitsleitung (2) einsetzbar ist. Der erfindungsgemäße Rückflussverhinderer weist einen als abströmseitig offenen Hohlkörper ausgestalteten Schließkörper (3) auf, der zwischen sich und einem zentralen Schließkörper-Gegenstück (4) einen Durchflusskanal (5) begrenzt. Dabei ist der Schließkörper (3) durch das in Durchströmrichtung (Pf 1) durch den Durchflusskanal (5) strömende Strömungsmedium von einer dichtend am Schließkörper-Gegenstück (4) anliegenden Schließstellung gegen die Rückstellkraft seiner Eigenelastizität und/oder Eigenstabilität in eine Offenstellung bewegbar. Der erfindungsgemäße Rückflussverhinderer (1) kann mit geringem Aufwand auch aus nur wenigen Bauteilen hergestellt werden. Dabei zeichnet sich der erfindungsgemäße Rückflussverhinderer (1) durch eine hohe Durchflussleistung bei gleichzeitig geringem Druckverlust aus (vgl. Fig. 2).

Stossdaempferkolben fuer Landfahrzeuge

Druckentlastungsanordnung

Druckentlastungsanordnung, welche beinhaltet: eine innere Hülle, welche mindestens einen Luftdurchlass aufweist; mindestens eine Membranlasche, welche den genannten mindestens einen Luftdurchlass abdichtend abdeckt, wobei die genannte mindestens eine Membranlasche ausgelegt ist, sich aufgrund eines Luftdruckniveaus zu bewegen, um den genannten mindestens einen Luftdurchlass zu öffnen; und eine äußere Hülle, welche an der genannten inneren Hülle befestigt ist, wobei ein Luftkanal zwischen genannter innerer Hülle und genannter äußerer Hülle abgegrenzt ist, wobei die genannte äußere Hülle dazu bestimmt ist, die genannte innere Hülle vor Nässe zu schützen.

MEMBRANPUMPE

Diaphragm pumps

Screen valve

A screen valve 210 comprises a multi-apertured valve plate 220 movable laterally relative to a multi-apertured valve seat 230 between a closed configuration where the apertures are not registered to prevent fluid flow, and an open configuration where the apertures are registered to permit fluid flow. The valve plate 220 is supported by a multi-apertured carrier plate 240 that moves laterally in synchrony with the valve plate 220 to maintain a predetermined lateral registration between their respective apertures as the valve plate 220 moves between the open and closed configurations, the valve plate being movable relative to the carrier plate 240 so as to lift off and return into contact with the valve seat 230. The co-moving carrier plate 240 shields the valve plate 220 to minimise pressure locking. Aerodynamic features urge the valve plate 220 towards or away from the carrier plate 240.

ROTARY FLUID-MACHUNE

IMPROVED MULTIPLE ONE STAGE SHEET VALVES TO THE USE IN INTERNAL-COMBUSTION ENGINES

DIAPHRAGM PUMP

Suction valve for piston compressors

SPECIAL FITTING FOR USING IN A GAS OR A FLUID TUBE

SELBSTTÄTIGES VENTIL

VERSCHLUSSLAMELLE FOR A VALVE WITH SEVERAL, CONCENTRIC ARRANGEMENT PASSAGE CHANNELS

CLOSING PANEL FOR A RING VALVE

VALVE SYSTEM FOR ENCAPSULATED MOTOR-COMPRESSOR UNITS

Vent disc for baby bottle and method and apparatus for manufacture thereof

VALVE WITH INTERNAL MEMBER

A valve with an internal member is disclosed which allows exhaled carbon dioxide to escape from a breathing circuit when the circuit gas pressure drops below a threshold pressure. The valve operates by occluding one or more ports under a relatively high pressure 5 and opening the one or more ports under a relatively low pressure. The internal member is attached to the body of the valve at two or more locations on the internal member. The internal member moves in a direction perpendicular to the gas flow through the valve. -34- ...

METHOD OF FORMING HEAD MEMBER HAVING INTEGRAL VALVE SEATS FOR REED VALVE

UNIDIRECTIONAL FLUID VALVE

The exhalation valve of a respiratory face mask, while taking up only a small area, can afford extraordinarily low pressure drop for easy breathing if constructed with a valve seat having a seal edge that defines an orifice and also forms a parabola in the plane bisecting the mask. Preferably the seal edge forms a rectangle as viewed against the direction of composite fluid flow through the valve, and a flexible flap is attached to a bridge across the center of the orifice at the apex of said parabola, each end of the flap being free to be lifted to allow fluid to flow through the valve.

LOW INERTIA CHECK VALVE

SELF-ADHESIVE LABEL VALVE

Release chimneys in correspondence of a plurality of intersection cuts 6 in a membrane-island (4) of film (tape) carrier (C) with cuts (3) made in the overlying self- adhesive label (2) made of polymeric film (E) with adhesive layer, all inscribed (i.e. inside) the perimeter of the membrane-island (4), destined to overlie so as to occlude pre-formed release openings in the packaging film of heatable food, ensure in an outstandingly reliable manner a gradual release of vapors while heating, without causing an undesirable collapse of the packaging film.

SYSTEMS AND METHODS FOR A REED VALVE MODULE AND VALVE ASSEMBLY

Reed valve modules and corresponding reed valve assemblies are disclosed. In one embodiment, the reed valve module includes a body having a single or a plurality of sealing faces, a seat and flow passages from the seat to the sealing face(s). The reed valve module also includes one or a plurality of petals. In some embodiments, the module further includes a petal guard. Novel reed valve assemblies are disclosed incorporating the reed valve modules. One embodiment of the reed valve assembly includes a seat with a plurality of fluid conduits, a retainer plate with a plurality of fluid conduits and a means for receiving recesses between the seat plate and retainer plate. Other devices, systems, and methods related to reed valve modules and valve assemblies are also disclosed.

VALVE PLATE WITH A RECESSED VALVE ASSEMBLY

A valve plate assembly includes a flapper valve and restraint in recessed intake and outlet ports of a valve plate. The recessed ports have guides located therein corresponding to notched sections of the flapper valve and the restraint such that a foolproof method of assembly can be achieved. In addition, a screw clearance in the top of the piston is not required since the recessed portion allows for the screw to be at or below the surface of the valve plate.

SYSTEMS AND METHODS FOR A REED VALVE MODULE AND VALVE ASSEMBLY

Backflow preventer

BLOW-OFF VALVE AND MANUFACTORING PROCESS OF THE AFORESAID THE VALVE

PNEUMATIC CONTROL SYSTEM AND PNEUMATIC CONTROL DEVICE THEREFOR OR THE LIKE

VARIABLE STATOR IN TWO PARTS FOR the ORDERING OF the FLOW Of a LIQUID THROUGH a TUBE Of a HEAD Of WATERING

Vehicle air-conditioning system

A vehicle air-conditioning system includes an air-conditioner and an air outlet for opening and closing an opening formed in a rear part of a vehicle body. A control unit causes the air outlet to open and close the opening in accordance with changes in air conditions in a passenger compartment, so as to keep the passenger compartment environmentally good condition.

Compressor

A discharge valve mechanism has discharge openings. The number of discharge openings to be placed in the open state is varied depending on the pressure and the flow rate of gas refrigerant discharged from a compression chamber. Accordingly, the occurrence of overcompression losses at the time of controlling of the variable displacement of a compressor is inhibited during the operation from small to large displacement. This achieves improvements in compressor operating efficiency.

Apparatus and method for the automated manufacture of self-sealing inflatable dunnage bags

An apparatus and method for the automated manufacture of self-sealing inflatable dunnage bags includes a bag making machine. The bag making machine includes a plurality of sheet roll spindles and a plurality of heat sealing rollers. A first bag sheet roll is retained on a first bag spindle. A second bag sheet roll is retained on a second bag spindle. A strip bag sheet roll is retained on a strip spindle. A plurality of first openings are formed through the first bag sheet. A plurality of second openings are formed through the strip bag sheet. Each edge of the strip bag sheet is heat sealed to the first bag sheet with a first roller. A first bag roller seals an end partition across the first and second bag sheets. The edges of the first and second bag sheet are heat sealed to each other with a second bag roller.

One way anti-back flow valve

A one-way valve includes a plate and a flexible vane. The plate has a vent opening of a first size and shape. The plate has a first curvature. The flexible vane has a second curvature distinct from the first curvature. The vane is fixed to the plate in a manner facilitating the deflection of the vane between an open position and a closed position. The vane is in a bent condition in the closed position. The vane conforms to the first curvature of the plate over the vent opening, and covers the vent opening in the closed position. The vane is elastic throughout a range of deflection associated with the vane moving between the closed position and the open position.

LAMELLAR VALVE

A lamellar valve, such as for compressors, having a seating plate and a plurality of elastic tongues arranged in parallel alongside one another and covering throughflow openings in the seating plate. The free ends of the tongues extend alternately in opposite directions over the throughflow openings. A catcher plate having abutment tongues also extending alternately from opposite directions and bent away from the seating plate forms the end abutment for the free ends of the elastic tongues.

Valve assembly

A valve assembly having a cylindrical valve chamber with radially directed inlet orifices and with a circular spring leaf which resiliently seals the orifices and which may be deflected by fluid pressure within the inlet orifices to open the orifices. The spring leaf is configured so that it may deflect to open the valve inlet without deviation from its essentially oval shape.

Saugventil in Lamellenausführung

KOMPRESSORVENTIL.

Rückschlagventil für Kraftstofftank

VENTILANORDNUNG

UEBERDRUCKVENTIL, INSBESONDERE FUER FLEXIBLE VERPACKUNGSBEHAELTER

Reed valve

A reed valve is adapted to be fixed to a fixing member. The reed valve includes a valve plate and a resiliently deformable reed. The valve plate is fixed to the fixing member and includes a frame part and a supporting column. The frame part has an opening inward of the frame part. The opening passes through the frame part in a thickness direction of the valve plate. The supporting column is disposed across an inside of the opening. The reed is configured to open or close the opening. The frame part includes a frame seating surface with which the reed is engaged. The supporting column includes a column seating surface with which the reed is engaged. The column seating surface is recessed relative to the frame seating surface in the thickness direction.

Adjustable tracheostomy valve

A valve, usable in connection with a tracheostomy tube, permits phonation by selectively blocking passage of air therethrough. The valve includes a main body portion with first and second internal passages. A first aperture extends radially through a peripheral wall, connecting the first internal passage to an environment external to the main body. A second aperture extends radially through the peripheral wall, connecting the second internal passage to the environment. A trach body portion defines a third internal passage and is connected to the main body portion. A flapper valve is sandwiched between the main body portion and the trach body portion. First and second adjustment rings permit adjustment of opening defined by the first and second apertures, thereby permitting control over the air passing through the first and second apertures.

Nonreturn valve for an exhaust line

In a nonreturn valve having a tubular body, which can be installed in a vertical section of an exhaust line, a valve seat, formed within the tubular body, for at least one float, and at least one circumferential groove, which is open in the downstream direction, the intention is to make available a solution by means of which it is possible to provide a nonreturn valve that is simple, advantageous in terms of production engineering and has a particularly high performance, and to do so in a way which is simple in terms of design and is economical. This is achieved by virtue of the fact that the circumferential rim of the at least one float projects radially over the radially inner circumferential wall section and has an axial lip facing upstream, which extends into the circumferential groove in the axial direction when the at least one float is resting on the valve seat.

Valve

A valve for controlling the flow of fluid having first ( 16 ) and second ( 14 ) plates with offsetting apertures and a sidewall ( 12 ) disposed between the plates around the perimeter of the plates to form a cavity ( 15 ) in fluid communication with the apertures is disclosed. The valve further comprises a flap ( 17 ) disposed and moveable between the first and second plates and having apertures ( 22 ) substantially offset from the apertures ( 20 ) of one plate ( 16 ) and substantially aligned with the apertures ( 18 ) of the other plate ( 14 ). The flap is motivated between the two plates in response to a change in direction of the differential pressure of fluid across the valve.

Pressure retention valve and integrated valve for tank system

A pressure retention valve with integrated valve is disclosed. The pressure retention valve with integrated valve includes a housing; an outer piston positioned in the housing; a main seal between the outer piston and the housing; an inner piston positioned in the outer piston, the inner piston having a bore containing a valve; a spring between the housing and a top of the outer piston; an ambient bore in the housing above the main seal; an outlet in the housing below the main seal; and a vessel connection in the housing adjacent to the bore of the inner piston. Methods of supplying fuel to a gas consuming system using the pressure retention valve are also described.

Solenoid Valve Assembly For A Dispensing System

A solenoid valve assembly is adapted to control product flow through a dispensing system. The dispensing system includes a housing. A plunger is disposed within the housing and has a first axial surface. A stopper is also disposed within the housing and has a second axial surface facing the first axial surface. At least one flow pathway is provided on at least one of the first and second axial surfaces.

Non-return valve having two closing bodies

In a non-return valve having a first closing body and a related first valve seat, and a second closing body and a related second valve seat, according to the invention the first and second valve seats are designed on a single valve seat component and the second valve seat is designed so as to surround the outside of the first valve seat.

Method for water hammerless opening of fluid passage, and method for supplying chemical solutions and device for water hammerless opening for which the method is used

The water hammerless opening device comprises an actuator operating type valve installed on the fluid passage, an electro-pneumatic conversion device to supply the 2-step actuator operating pressure Pa to the afore-mentioned actuator operating type valve, a vibration sensor removably fixed to the pipe passage on the upstream side of the actuator operating type valve, and a tuning box to which the vibration detecting signal Pr detected by the vibration sensor is inputted, through which the control signal Sc to control the step operating pressure Ps′ of the afore-mentioned 2-step actuator operating pressure Pa is outputted to the electro-pneumatic conversion device, and with which the 2-step actuator operating pressure Pa, of the step operating pressure Ps′ which makes the vibration detecting signal Pr nearly zero, is outputted from the electro-pneumatic conversion by adjusting the control signal Sc.

Water-saving device structure

A water-saving device structure is provided. When the pressure of an entry water is high, a water-barrier sheet body is pressed to cause a downwardly-moved elastic stopping portion to block a water-inflow opening of a water-outflow seat body, so that the water flow is conducted to a water-outflow opening through a water-conducting opening of the water-barrier sheet body. When the pressure of the entry water is low, the entry water is conducted to the water-outflow opening via one path traveling from the water-conducting opening of the water-bather sheet body to the water-outflow opening of the water-outflow seat body and the other path traveling along the clearances of stopping wall portions of the water-outflow seat body, a water-storage circular slot portion, the water-inflow openings of the water-outflow seat body and the water-outflow opening of the water-outflow seat body. Therefore, the outflow water with steady flow rate can be obtained.

Pressure Release Valve

A pressure release valve including a holder element provided on the outside of the lid of a pressure cooker, a body packing disposed inside the holder element, a pressure release tube provided in the lower inside portion of the body packing, a valve plunger disposed in the body packing and comprising a shank portion and a beveled portion which is at the lower end of the shank portion and set on the upper end of the pressure release tube so as to allow the interior of the pressure release tube to be an empty space, a coil spring mounted on the valve plunger, a lock nut connected to the holder element, and a filtering cap provided fixedly or non-fixedly within the lock nut.

Pressure relief valve with orifice

A pressure relief valve includes a housing including an inlet chamber adapted to be in communication with an outlet of a pump and an outlet chamber adapted to be in communication with a pump inlet. The housing includes a bore having a first end in communication with the inlet chamber and a main spill aperture in communication with the bore and the outlet chamber. A piston includes an orifice and an axially spaced apart aperture. The piston is axially moveable within the bore between a first position whereat the piston seals the inlet chamber from the outlet chamber, a second position whereat the inlet and outlet chambers are in fluid communication with one another via only the orifice, and a third position whereat the inlet and outlet chambers are in fluid communication with one another via the orifice and the aperture. A spring biases the piston toward the first position.

Self-adhesive label valve

Self-adhesive label valves are disclosed having release chimneys in correspondence of a plurality of intersection cuts in a membrane-island of film (tape) carrier (C) with cuts made in the overlying self-adhesive label made of polymeric film (E) with an adhesive layer. All are inscribed within (i.e. inside) the perimeter of the membrane-island, and are destined to overlie so as to occlude pre-formed release openings in the packaging film of heatable food, and ensure in an outstandingly reliable manner a gradual release of vapors while heating, without causing an undesirable collapse of the packaging film.

Compressor gas cutoff

Embodiments of a compressor cutoff are presented. In an embodiment, the present invention includes apparatus for cutting off the flow of gas/liquid in the event of compressor failure or breakdown. In this embodiment, gas/liquid flows from its source through one or more passageways into a first input chamber, and also through one or more other passageways into a second input chamber, where the first and second input chambers are separated by a stop plunger. During the down-stroke of the compressor's piston, gas/liquid in the first chamber passes (or is drawn) through an inlet valve of the piston bore, and during the up-stroke of the piston that gas/liquid is forced through an outlet valve to a tank or other compressed gas/liquid receptacle. So long as the compressor operates normally, the pressure in the two input chambers (i.e., on each side of the stop plunger) will be substantially equal, thereby keeping the stop plunger in place. If, however, the compressor fails in a manner that exposes gas/liquid in the piston bore to the atmosphere, or otherwise results in a decrease in pressure in the piston bore, the pressure in the first input chamber will fall below the pressure in the second input chamber, thereby causing the stop plunger to move to a position in which it blocks the flow of gas/liquid from entering the inlet valve of the piston bore.

Vent with relief valve

A vent assembly has a housing defining a cavity, a first end, a second end, and a coupling structure towards the second end. A mounting surface is positioned between the first end and the second end within the cavity and defines a valve opening and a vent opening. A vent is coupled to the mounting surface across the vent opening, and an umbrella valve is sealably disposed on the mounting surface across a valve opening.

System and apparatus for controlling fluid flow in drainage systems

A fluid control system to control fluid flow within a drainage system is provided that includes a fluid control device configured to couple to an interior wall of a cylindrical structure of the drainage, and a coupling mechanism configured to couple the fluid control device to the interior wall, wherein, while in a resting state, the fluid control device is configured to at least partially cover an aperture of the interior wall. When fluid contacts the fluid control device at a flow rate of at least a flow threshold, the fluid control device is configured to at least partially uncover the aperture of the interior wall. The fluid control device has a spherical shape, wherein a diameter of the fluid control device has a diameter that is greater than or equal to a diameter of the aperture.

Oil Return Mechanism

An oil return mechanism includes a base, a control switch, a first blocking ball mounted in the base, an elastic member mounted between the first blocking ball and the base. The base has a liquid storing cavity, a liquid returning cavity, a communicating cavity, a first communicating opening communicating between the liquid returning cavity and the communicating cavity, and a second commit eating opening communicating between the communicating cavity and the liquid storing cavity. The present invention can regulate a speed of a fluid flowing from the liquid returning cavity to the communicating cavity, and has the advantages of simple structure and great reduction of cost.

Tilting disc check valve

The invention discloses a tilting disc check valve, which includes a left valve body ( 1 ), a right valve body ( 2 ), a large valve plate ( 3 ), a small valve plate ( 4 ) and a diaphragm control group ( 5 ), wherein the left valve body ( 1 ) and the right valve body ( 2 ) are butted into a whole through oblique openings; the oblique openings are inclined in a manner that upper parts are inclined towards the right valve body ( 2 ); the diaphragm control group ( 5 ) is arranged on the left valve body ( 1 ); the large valve plate ( 3 ) is arranged along the oblique openings; the large valve plate ( 3 ) is positioned in a valve cavity formed by the left valve body ( 1 ) and the right valve body ( 2 ); the large valve plate ( 3 ) is suspended on shaft holes of the left valve body ( 3 ) through valve shafts ( 6 ); the small valve plate ( 4 ) is connected with the diaphragm control group ( 5 ); and the small valve plate ( 4 ) is mounted at a slow closing valve port of the large valve plate ( 3 ) through a small valve plate pin shaft ( 7 ). According to the tilting disc check valve, a two-stage valve closing process where the large valve plate is quickly closed and the small valve plate at a drain hole of the large valve plate is slowly closed within adjustable time can be implemented, and the aims of reducing backflow of a water body and eliminating pump starting and stopping water hammer are fulfilled.

Valve body with integral bypass

A valve body with an integral bypass includes a primary valve body portion defining a primary internal surface, the primary internal surface defining a primary bore extending through the primary valve body portion from a primary upstream end to a primary downstream end; and the bypass seamlessly integrated with the primary valve body portion, the bypass defining a bypass internal surface, the bypass internal surface defining a bypass bore, the bypass bore comprising a bypass upstream bore and a bypass downstream bore, the bypass upstream bore extending through the primary upstream end of the primary valve body portion, the bypass downstream bore extending through the primary downstream end of the primary valve body portion, the bypass internal surface seamlessly intersecting the primary internal surface at the primary upstream end and the primary downstream end.

Pressurized Vapor Cycle Liquid Distillation

Embodiments of the invention are directed toward a novel pressurized vapor cycle for distilling liquids. In some embodiments of the invention, a liquid purification system is revealed, including the elements of an input for receiving untreated liquid, a vaporizer coupled to the input for transforming the liquid to vapor, a head chamber for collecting the vapor, a vapor pump with an internal drive shaft and an eccentric rotor with a rotatable housing for compressing vapor, and a condenser in communication with the vapor pump for transforming the compressed vapor into a distilled product. Other embodiments of the invention are directed toward heat management, and other process enhancements for making the system especially efficient.

VALVE BODY WITH IDENTIFICATION TAB

A valve body with an integral bypass includes a primary valve body portion defining a primary bore extending through the primary valve body portion from a primary upstream end to a primary downstream end, the primary bore defining an axis, the primary bore including a primary upstream bore extending through the primary upstream end and a primary downstream bore extending through the primary downstream end, the primary valve body portion configured to house a valve member between the primary upstream bore and the primary downstream bore; and the bypass seamlessly integrated with the primary valve body portion, the bypass defining a bypass bore, the bypass bore including a bypass upstream bore and a bypass downstream bore, the bypass including a bypass valve body disposed between the bypass upstream bore and the bypass downstream bore. 1. A valve body with an integral bypass comprising:a primary valve body portion defining a primary bore extending through the primary valve body portion from a primary upstream end to a primary downstream end, the primary bore defining an axis, the primary bore comprising a primary upstream bore extending through the primary upstream end and a primary downstream bore extending through the primary downstream end, the primary valve body portion configured to house a valve member between the primary upstream bore and the primary downstream bore; andthe bypass seamlessly integrated with the primary valve body portion, the bypass defining a bypass bore, the bypass bore comprising a bypass upstream bore and a bypass downstream bore, the bypass comprising a bypass valve body disposed between the bypass upstream bore and the bypass downstream bore, the bypass upstream bore extending through the primary upstream end and seamlessly intersecting the primary upstream bore, the bypass upstream bore extending radially outward and axially inward from the primary upstream bore to the bypass valve body relative to the axis, the bypass downstream bore ...

MEDICAL FLUID DELIVERY DEVICE ACTUATED VIA MOTIVE FLUID

A medical fluid delivery device includes (i) a process fluid body including first and second sides defining a first process fluid inlet valve seat and a first process fluid outlet valve seat and a second process fluid inlet valve seat and a second process fluid outlet valve seat; (ii) a first motive fluid plate defining a first aligned motive fluid inlet valve actuation area and a first aligned motive fluid outlet valve actuation area; (iii) a second motive fluid plate defining a second aligned motive fluid inlet valve actuation area and a second aligned motive fluid outlet valve actuation area; (iv) a first inlet valve diaphragm disposed between the first motive fluid inlet valve actuation area and the first process fluid inlet valve seat; and (v) a first outlet valve diaphragm disposed between the first motive fluid outlet valve actuation area and the first process fluid outlet valve seat. 1. A medical fluid delivery device comprising:a process fluid body including a first side defining a first process fluid inlet valve seat and a first process fluid outlet valve seat and a second side defining a second process fluid inlet valve seat and a second process fluid outlet valve seat;a first motive fluid plate coupled with the first side of the process fluid body, the first motive fluid plate defining a first motive fluid inlet valve actuation area and a first motive fluid outlet valve actuation area, wherein the first motive fluid inlet valve actuation area is aligned with the first process fluid inlet valve seat and the first motive fluid outlet valve actuation area is aligned with the first process fluid outlet valve seat;a second motive fluid plate coupled with the second side of the process fluid body, the second motive fluid plate defining a second motive fluid inlet valve actuation area and a second motive fluid outlet valve actuation area, wherein the second motive fluid inlet valve actuation area is aligned with the second process fluid inlet valve seat and the ...

MEDICAL FLUID PUMPING SYSTEM INCLUDING PUMP AND MACHINE CHASSIS MOUNTING REGIME

A medical fluid pumping system includes (i) a medical fluid pump including a pump chamber, inlet and outlet valve chambers in fluid communication with the pump chamber, the pump chamber associated with a pumping chamber motive fluid connection, the inlet valve chamber associated with an inlet valve motive fluid connection, and the outlet valve chamber associated with an outlet valve motive fluid connection; (ii) a medical fluid chassis including a motive fluid source, and a first motive fluid connecting structure, a second motive fluid connecting structure, a third motive fluid connecting structure; and (iv) wherein the pumping chamber motive fluid connection, the inlet valve motive fluid connection, and the outlet valve motive fluid connection are translated simultaneously to mate respectively with the first motive fluid connecting structure, the second motive fluid connecting structure, and the third motive fluid connecting structure for fluid communication with the motive fluid source. 1. A medical fluid pumping system comprising: a first pump chamber,', 'a first inlet valve chamber in fluid communication with the first pump chamber,', 'a first outlet valve chamber in fluid communication with the first pump chamber,', 'a second pump chamber,', 'a second inlet valve chamber in fluid communication with the second pump chamber, and', 'a second outlet valve chamber in fluid communication with the second pump chamber, wherein the medical fluid pump includes a first pumping chamber motive fluid connection, a first inlet valve motive fluid connection, a first outlet valve motive fluid connection, a second pumping chamber motive fluid connection, a second inlet valve motive fluid connection, and a second outlet valve motive fluid connection; and, 'a medical fluid pump including'} a motive fluid source, and', 'a first motive fluid connecting structure, a second motive fluid connecting structure, a third motive fluid connecting structure, a fourth motive fluid connecting ...

Blood treatment system having pulsatile blood intake

A blood treatment system includes (i) a blood pump including a first blood pump chamber operable with a first inlet valve and a first outlet valve, and a second blood pump chamber operable with a second inlet valve and a second outlet valve; (ii) an arterial blood line; (iii) a dialyzer placed in fluid communication with the arterial blood line, wherein the blood pump is provided along the arterial blood line upstream of the dialyzer; (iv) a venous blood line extending downstream from the dialyzer; and (v) a processor configured to sequence the first and second blood pump chambers so as to achieve a pulsatile pattern of filling the first and second blood pump chambers and an at least substantially constant pattern of discharging blood from the first and second blood pump chambers to the dialyzer.

Dual poppet pressure relief valve with vacuum adaptor capability

A pressure relief valve is disclosed with a first stage valve that is in series with a second stage valve, with an enclosed cavity between the first stage valve and the second stage valve. The first stage valve relieves pressure from an enclosure into the enclosed cavity between the stages, when the pressure is above a cracking pressure of the first stage valve. The second stage relieves pressure from the enclosed cavity when the pressure is above the cracking pressure of the second stage valve.

SYSTEMS AND METHODS FOR A REED VALVE MODULE AND A MODULAR REED VALVE ASSEMBLY

A reed valve module includes a module body and a reed petal. The module body includes a seating surface located on a first side of the module body and a sealing face located on a second side the module body. The reed petal is positioned adjacent to the second side of the module body and adapted to seal against the sealing face when the reed petal is in a closed position, wherein the reed valve module is a self-contained modular unit that is adapted to be inserted into a receiving cavity of a modular reed valve assembly such that the seating surface is positioned adjacent to a retaining surface of the modular reed valve assembly and an interfacing surface of the reed valve module is positioned adjacent to a second retaining surface of the modular reed valve assembly, and wherein the reed valve module is adapted to be captured and retained within the modular reed valve assembly between the first and second retaining surfaces. 1. A reed valve module , comprising: a seating surface located on a first side of the module body; and', 'a sealing face located on a second side of the module body; and, 'a module body, comprisinga reed petal that is positioned adjacent to the second side of the module body and adapted to seal against the sealing face when the reed petal is in a closed position, wherein the reed valve module is a self-contained modular unit that is adapted to be inserted into a receiving cavity of a modular reed valve assembly such that the seating surface is positioned adjacent to a first retaining surface of the modular reed valve assembly and an interfacing surface of the reed valve module is positioned adjacent to a second retaining surface of the modular reed valve assembly, and wherein the reed valve module is adapted to be captured and retained within the modular reed valve assembly between the first and second retaining surfaces.2. The reed valve module of claim 1 , wherein the seating surface surrounds an entire periphery of a fluid flow inlet of the ...

VENT WITH RELIEF VALVE

A vent assembly has a housing defining a cavity, a first end, a second end, and a coupling structure towards the second end. A mounting surface is positioned between the first end and the second end within the cavity and defines a valve opening and a vent opening. A vent is coupled to the mounting surface across the vent opening, and an umbrella valve is sealably disposed on the mounting surface across a valve opening. 1. A vent assembly comprising: a mounting surface positioned between the first end and the second end within the cavity, the mounting surface defining a valve opening and a vent opening;', 'a vent coupled to the mounting surface across the vent opening; and', 'an umbrella valve sealably disposed on the mounting surface across a valve opening., 'a housing defining a cavity, a first end, a second end, and a coupling structure towards the second end;'}2. The vent assembly of any of and - , further comprising an end cap coupled to the housing towards the first end.3. The vent assembly of any of - and - , wherein the mounting surface forms a unitary structure with the housing.4. The vent assembly of any of - and - , wherein the vent comprises a breathable membrane.5. The vent assembly of any of - and - , wherein the housing defines an opening between an ambient environment and the cavity , to define a fluid flow pathway between the outside of the housing and the mounting surface.6. The vent assembly of any of - and - , the housing comprising a first obstruction , wherein the first obstruction is positioned between the opening and the vent.7. The vent assembly of any of - and - , the housing comprising a second obstruction disposed on the mounting surface extending into the fluid flow pathway , wherein the second obstruction is positioned between the opening and the umbrella valve.8. The vent assembly of any of - and - , wherein the fluid flow pathway defines a tortuous path between the opening and the umbrella valve.9. The vent assembly of any of - and - , ...

High Reliability Pressure Relief Valve

A pressure relief valve is disclosed with a first stage valve that is in series with a second stage valve, with an enclosed cavity between the first stage valve and the second stage valve. The first stage valve relieves pressure from an enclosure into the enclosed cavity between the stages, when the pressure is above a cracking pressure of the first stage valve. The second stage relieves pressure from the enclosed cavity when the pressure is above the cracking pressure of the second stage valve.

CONNECTOR FOR TRANSFERRING FLUID AND METHOD OF USE

A connector for transferring fluid and method therefor. The connector may have a first port and a second port which may be coupled together at a main channel with a valve element therein controlling fluid flow through the first port. The first port joins the main channel to provide a fluid path around the valve element and through the second port. 1. A connector for transferring fluid , the connector comprising:a housing comprising a base having a first port, and a cap having a second port, the base and cap defining an channel that extends between the second and first port; anda valve element comprising a body and a head, the body having a wall with an inner surface defining an internal chamber and comprising a first notch, the head coupled to the body and having a second notch, and a longitudinal axis between the body and head, wherein the valve element is positioned within the channel with the head within the second port.2. The connector of claim 1 , wherein the first notch and a third notch extend along the head.3. The connector of claim 2 , wherein the first and third notches have a common width and a common depth.4. The connector of claim 2 , wherein the first and third notches have a depth that extends transverse to the longitudinal axis claim 2 , and the first notch has a first depth and the third notch has a second depth that is less than the first depth.5. The connector of claim 2 , wherein the first and third notches have a width that extends along the longitudinal axis claim 2 , and the first notch has a first width and the third notch has a second width that is less than the first width.6. The connector of claim 2 , wherein the first and third notches extend along opposite surfaces of the head.7. The connector of claim 2 , wherein a fourth notch and a fifth notch extend along an inner surface of the wall.8. The connector of claim 7 , wherein the fourth and fifth notches extend along opposite surfaces of the inner surface of the wall.9. The connector of ...

Method And Apparatus For Providing Over-Pressure Protection For An Underground Storage Cavern

A method and apparatus is provided which will provide over-pressure protection for an underground storage cavern by reducing the pressure of a pressurized gas stream originating from the an underground storage cavern to form a lower pressure gas stream, monitoring the pressure of a lower pressure gas stream and stopping the flow of the lower pressure gas stream to the pipeline should the pressure of the lower pressure gas stream exceed a threshold value.

RELIEF VALVE ASSEMBLY AND COMPONENTS THEREOF

A relief valve assembly is provided for use in connection with high pressure and ultrahigh pressure pumps. The relief valve assembly includes a valve pin having an engagement portion with a tapered surface and a valve seat having a valve pin receiving aperture defining a tapered surface on the valve seat to sealingly mate with the engagement portion of the valve pin when the valve pin is seated against the valve seat in a seated configuration. The valve seat further includes at least one bypass passage that extends from the valve pin receiving aperture to an exterior surface of the valve seat such that when the valve pin is displaced away from the seated configuration fluid can pass through the bypass passage and an annular space created between the engagement portion of the valve pin and the valve seat. Systems incorporating the relief valve assembly are also provided. 1. A relief valve assembly comprising:a valve pin having an engagement portion with a tapered surface; anda valve seat having a valve pin receiving aperture defining a tapered engagement surface on the valve seat to sealingly mate with the engagement portion of the valve pin when the valve pin is seated against the valve seat in a seated configuration, the valve seat further having at least one bypass passage that extends completely through a lateral side wall of the valve seat from the valve pin receiving aperture through the tapered engagement surface of the valve seat to an exterior lateral side surface of the valve seat such that when the valve pin is displaced away from the seated configuration fluid can pass through the bypass passage and an annular space created between the engagement portion of the valve pin and the valve seat, the annular space providing a primary flow path out through a terminal end of the valve seat to an outlet of the relief valve assembly and the bypass passage providing a secondary flow path through a side of the valve seat to the outlet of the relief valve assembly ...

VALVE BODY WITH IDENTIFICATION TAB

A valve body includes a flange; and an identification tab disposed on the flange, the identification tab defining indicia. A pipe system includes a first flange; a second flange fastened to the first flange by a plurality of fasteners; and an identification tab disposed on the first flange, the identification tab defining indicia. 1. A valve body comprising:a flange; andan identification tab disposed on the flange, the identification tab defining indicia.2. The valve body of claim 1 , wherein:the flange defines an outer circumferential surface; andthe identification tab is disposed on the outer circumferential surface.3. The valve body of claim 2 , wherein the identification tab extends outward beyond a radius of the outer circumferential surface.4. The valve body of claim 1 , wherein the indicia indicate a design standard for the flange.5. The valve body of claim 1 , wherein:the identification tab defines an indicia surface;the indicia are defined by the indicia surface of the identification tab;the flange defines a flange face; andthe indicia surface is angled away from the flange face.6. The valve body of claim 5 , wherein:the flange defines an outer circumferential surface; andthe indicia surface extends outwards from the outer circumferential surface.7. The valve body of claim 1 , wherein the identification tab comprises a label claim 1 , and wherein the label defines the indicia.8. The valve body of claim 1 , wherein the indicia are recessed into an indicia surface of the identification tab.9. The valve body of claim 1 , wherein the indicia are raised from an indicia surface of the identification tab.10. A pipe system comprising:a first flange;a second flange fastened to the first flange by a plurality of fasteners; andan identification tab disposed on the first flange, the identification tab defining indicia.11. The pipe system of claim 10 , wherein the indicia are visible when the first flange is fastened to the second flange.12. The pipe system of claim 11 ...

CONNECTOR FOR TRANSFERRING FLUID

A connector for transferring fluid, the connector may have a first port, a second port, and a third port which may be fluidly coupled together at an internal chamber with a first valve element therein controlling fluid flow through the second port. The connector can have ribs extending along the connector to provide a fluid path around the valve element and between the first port and the second port. The valve element can separate the internal chamber into an air chamber and a liquid chamber, and the third port can be continuously coupled to the liquid chamber regardless of a position of the valve element. 1. A connector for transferring fluid , the connector comprising:a base having a first port and an air passage,a cap having a second port, an internal chamber defined between the base and the cap, and ribs extending longitudinally along an inner surface of the cap and between the second port and the base, the internal chamber fluidly coupled to the first and second ports; anda valve element within the internal chamber, the valve element comprising a head portion configured to seal the second port, a body portion having a cavity;wherein the valve element separates the internal chamber into an air chamber and a liquid chamber, the air chamber in fluid communication with the air passage, and the liquid chamber in fluid communication with the first port and having a fluid path between the ribs and the valve element.2. The connector of claim 1 , wherein a portion of the body portion is retained between an outer surface of the base and the ribs.3. The connector of claim 1 , wherein the head portion comprises a first portion in sealing contact with an inner surface of the internal chamber at a first location proximate to the second port to create a primary seal claim 1 , and a second portion configured to engage a shoulder of the cap at a second location separated from the first location to create a secondary seal.4. The connector of claim 1 , wherein a top of the head ...

Pressurized Vapor Cycle Liquid Distillation

Embodiments of the invention are directed toward a novel pressurized vapor cycle for distilling liquids. In some embodiments of the invention, a liquid purification system is revealed, including the elements of an input for receiving untreated liquid, a vaporizer coupled to the input for transforming the liquid to vapor, a head chamber for collecting the vapor, a vapor pump with an internal drive shaft and an eccentric rotor with a rotatable housing for compressing vapor, and a condenser in communication with the vapor pump for transforming the compressed vapor into a distilled product. Other embodiments of the invention are directed toward heat management, and other process enhancements for making the system especially efficient. 1. A liquid vapor distillation apparatus comprising:an evaporative condenser for transforming the liquid to a compressed vapor and for transforming the compressed vapor into a product liquid;a first heat exchanger;a second heat exchanger; and a first heat source input connected to a first heat source fluid line, the first heat source input connecting the first heat exchanger and the third heat exchanger; and', 'a second heat source input connected to a second heat source fluid line, whereby multiple heat source inputs are exchanged with the intake liquid., 'a third heat exchanger, the first heat exchanger comprising2. The apparatus of claim 1 , wherein at least one of the first and second heat exchangers further comprises a third heat source input fluidly connected to a steam pump drive motor.3. The apparatus of claim 1 , wherein at least one of the first and second heat exchangers further comprises a third heat source input fluidly connected to a Stirling engine generator powering the liquid vapor distillation apparatus.4. The apparatus of claim 1 , wherein at least one of the first and second heat exchangers further comprises a third heat source input fluidly connected to a Stirling engine generator.5. The apparatus of claim 1 , wherein ...

One-way valve means

Einweg-Ventileinrichtung (1), insbesondere Niederdruck-Rückschlagventil, zur Verwendung in einem Infusionsbesteck mit einem Gehäuse (2, 3), welches ein Zuleitungsrohr (5) und ein Ableitungsrohr (14) aufweist, und mit mindestens einer in einem Druckraum (12) angeordneten Dichtung (4), dadurch gekennzeichnet, dass der Druckraum (12) aus zwei Druckkammern (12a, 12b) besteht, dass die Druckkammern (12a, 12b) über einen Verbindungskanal (40) miteinander verbunden sind, dass in den Druckkammern (12a, 12b) die Dichtung (4) angeordnet ist, und dass die Dichtung (4) zwischen einer ersten Dichtringlippe (9) und einer zweiten gegenüber liegenden Dichtringlippe (13) unter Spannung anliegt. One-way valve means (1), in particular low-pressure check valve, for use in an infusion set having a housing (2, 3), which has a supply pipe (5) and a discharge pipe (14), and with at least one in a pressure chamber (12) arranged seal (4), characterized in that the pressure chamber (12) consists of two pressure chambers (12a, 12b) is that the pressure chambers (12a, 12b) over a Connecting channel (40) are interconnected, that in the pressure chambers (12a, 12b), the seal (4) is arranged, and that the seal (4) between a first sealing ring lip (9) and a second opposite Sealing ring lip (13) is under tension.

Diaphragm pump and related methods

In some arrangements, a pump for moving a fluid has one or more pump chambers and one or more flow control valves with diaphragm actuation regions. Motive fluid can activate the diaphragm actuation regions, and a pattern of fluid flow can be controlled by varying the pressure levels of the motive fluid.

FLUEGELZELLEN- OR INNER AND OUTDOOR PUMP

Shuttle valve for twin tower air dryer

A shuttle valve for a gas drying system that cleans and drys a stream of unpurified pressurized gas received from a source thereof and supplied to a pneumatic system that uses such a purified pressurized air. The valve includes a housing that connects a drying assembly to a structure that conveys the unpurified pressurized air to the drying assembly. The housing contains a choke disc provided with an office and a movable piston located in axial alignment with the choke disc. When the unpurified pressurized air is directed into the drying assembly for drying, the piston moves away from the choke disc to permit dry air to freely flow from the drying assembly and through the valve to the system utilizing purified pressurized air.

Valve for a pressure cooker

Die Erfindung betrifft eine Ventilanordnung für einen Dampfdruckkochtopf mit einem Kochventil, das eine höhenverstellbare Haube (5) aufweist und mit einer im Bereich unter der Haube angeordneten Druckentlastungseinrichtung mit einer während des Kochens durch einen Verschlusskörper verschlossenen Abblasöffnung (10) im Deckel, die zur Drukkentlastung durch ein Verstellen der Haube zu öffnen ist. Der Verschlusskörper besteht aus einer an der dem Dekkel zugekehrten Haubenseite derart angeordneten Dichtung (9), dass die Dichtung in Kochstellung der Haube (5) die Abblasöffnung (10) verschliesst und beim Höhenverstellen der Haube freigibt. The invention relates to a valve arrangement for a pressure cooker with a cooking valve, which has a height-adjustable hood (5) and with a pressure relief device arranged in the area under the hood, with a blow-off opening (10) in the lid which is closed during cooking by a closure body and which serves to relieve pressure an adjustment of the hood is to be opened. The closure body consists of a seal (9) arranged on the hood side facing the lid in such a way that the seal seals the blow-off opening (10) when the hood (5) is in the cooking position and releases it when the hood is adjusted in height.

Valve assembly

Apparatus for sampling and measuring the pressure of spinal fluid including, a valve, a spinal needle, a manometer and a receptacle. The valve includes a housing having an elongated chamber and a hollow stem extending outwardly from the housing and communicating with the chamber, and the needle is removably connected to the stem and communicates with the stem channel and the chamber. The valve has double-ended plug means biased against both ends of the chamber in sealing engagement to prevent the escape of fluid from the chamber. The manometer is removably connected to an end of the housing and has a hollow stem to retract one end of the plug means in the chamber to establish fluid communication between the chamber and manometer. The receptacle is removably attached to an end of the housing and has a hollow stem to retract one end of the plug means in the chamber to establish fluid communication between the chamber and the inside of the receptacle.

Dynamic annulus heart valve and reconstruction ring

A synthetic leaflet aortic and mitral heart valve for use in replacement of diseased natural heart valves having a flexible, curved framework, a flexible membrane attached to the framework and fixation means for attaching the valve to the tissue annulus. The framework consists of at least three curved flexible valve struts, each joined together at one end to a common central point of the valve and extending in the same direction radially at equal angles so that the free ends are unattached and at a distance from one another. The free ends are provided with sewing pads for artificial attachment of each free end separately to the natural tissue annulus or to an artificial annulus reconstruction ring which itself is sutured to the tissue annulus to restore its symmetry. The membrane is formed of a thin, common flexible synthetic material which is hemispherically shaped to fit over, and be attached to the framework to provide at least three partial hemispheric segments extending between adjacent frame struts in such a manner that the free edge of each segment can contact the tissue annulus when the valve is closed. Upon forward flow of the blood, the valve segments collapse inward against one another and allow blood to pass between the tissue annulus and the collapsed membrane segments.

Diaphragm based spontaneous inflation inhibitor in a pump for an inflatable prosthesis

A pump assembly for a penile implant is provided having a mechanism which prevents spontaneous inflation of the cylinders implanted within the user. The preventative mechanism uses overpressure generated by the reservoir during unintentional compression to effectively seal the pump assembly from unintended fluid flow. The prevention mechanism itself creates all necessary forces to prevent the undesired fluid flow to the cylinders. This is accomplished by incorporating appropriate mechanisms within the pump itself.

Pressurized vapor cycle liquid distillation

Embodiments of the invention are directed toward a novel pressurized vapor cycle for distilling liquids. In some embodiments of the invention, a liquid purification system is revealed, including the elements of an input for receiving untreated liquid, a vaporizer coupled to the input for transforming the liquid to vapor, a head chamber for collecting the vapor, a vapor pump with an internal drive shaft and an eccentric rotor with a rotatable housing for compressing vapor, and a condenser in communication with the vapor pump for transforming the compressed vapor into a distilled product. Other embodiments of the invention are directed toward heat management, and other process enhancements for making the system especially efficient.

Hydraulic valve for automobile, has check valve with band formed of closed ring, which serves as opening-free band and is made of spring steel, where steel forms ring by overlap of section of bands at about one hundred and eighty degree

The valve has a check valve with a band (9) formed of a closed ring (7), which is supported on an inner side of a central guide in a freely rotating manner. The ring is an opening-free band, which closes passage openings to the guide during drop of the setback pressure. The ring is made up of a spring steel, where the steel forms the ring by an overlap (31) of a section of the bands at about 180 degree. The passage openings are asymmetrically distributed on a section of the central guide.

Check valve and valve arrangement comprising such a check valve

A check valve is mounted in a valve arrangement having a valve member with an annular channel and at least one bore opening into the annular channel. The check valve has a closing element configured to close the at least one bore in the annular channel. The closing element is formed of a strip shaped as a ring. The strip of the check valve is arranged in the annular channel of the valve member.

Valve with check valve

The invention relates to a valve with a central guide and a check valve. The check valve and valve form an integrated component, the check valve being formed by a band which is shaped into a ring and is arranged in an internal groove.

Control valve for hydraulic media

A control device for hydraulic media with a control valve, in particular, a proportional valve that has a sleeve housing provided with radial openings, wherein at least one pressurized flow feed line, at least one control line, and at least one return line are connected to the openings, and the opening for the pressurized flow feed line is connected to a ring-shaped groove, with a control slide that has control edges and is supported in the sleeve housing so that it can move in the axial direction and is actuated by an electromagnetically constructed control unit, advantageously for controlling a phase adjustment device for the variable adjustment of the control times of gas exchange valves of a reciprocating piston internal combustion engine. A non-return valve is installed in the pressurized flow feed line or in the ring-shaped groove that is arranged in the sleeve housing.

Valve

Valve assembly for air-compressing cylinders

Pressure relief blow-out device

Check valve

A check valve for radial ports in a fluid conductor has a resilient partially cylindrical member having a pair of legs biased against a surface on the conductor to close the ports to prevent fluid flow in one direction whereas fluid in the ports moves the legs away from the surface to permit fluid flow through the ports in the opposite direction.

Pressure valve

Hydraulic valve arrangement with an annular check valve element

A valve arrangement includes a valve body with a bore within which a spool slides to control fluid flow between first and second ports. The bore has an annular recess into which the first port opens and in which is located a check valve band formed by a strip with overlapping ends. Pressure in the first port causes the check valve band to contract and expand circumferentially to open and close the first port. A stop is located near one end of the strip and is engaged by the other end to limit the amount of contraction of the check valve band. Thus the diameter of the check valve band cannot contract smaller than the diameter of the bore, thereby retaining the check valve ring in the annular recess. The check valve band optionally has a plurality of tabs projecting from each edge and engaging side walls of the annular recess.

Check valve and valve with such a check valve

The non-return valve comprises a ring (6) made from a strip of spring steel. There may be a gap between the ends of the strip or they may overlap. An Independent claim is included for a valve system containing the ring.

Pressure reduction mechanism after uncoupling.

Medical fluid delivery device actuated via motive fluid

A medical fluid delivery device includes a process fluid body including first and second sides defining a first process fluid inlet valve seat and a first process fluid outlet valve seat and a second process fluid inlet valve seat and a second process fluid outlet valve seat; a first motive fluid plate defining a first aligned motive fluid inlet valve actuation area and a first aligned motive fluid outlet valve actuation area; and a second motive fluid plate defining a second aligned motive fluid inlet valve actuation area and a second aligned motive fluid outlet valve actuation area. The device further includes a first inlet valve diaphragm disposed between the first motive fluid inlet valve actuation area and the first process fluid inlet valve seat; and a first outlet valve diaphragm disposed between the first motive fluid outlet valve actuation area and the first process fluid outlet valve seat.

Medical fluid pumping system including pump and machine chassis mounting regime

A medical fluid pumping system includes (i) a medical fluid pump including a pump chamber, inlet and outlet valve chambers in fluid communication with the pump chamber, the pump chamber associated with a pumping chamber motive fluid connection, the inlet valve chamber associated with an inlet valve motive fluid connection, and the outlet valve chamber associated with an outlet valve motive fluid connection; and (ii) a medical fluid chassis including a motive fluid source, and a first motive fluid connecting structure, a second motive fluid connecting structure, a third motive fluid connecting structure. The pumping chamber motive fluid connection, the inlet valve motive fluid connection, and the outlet valve motive fluid connection are translated simultaneously to mate respectively with the first motive fluid connecting structure, the second motive fluid connecting structure, and the third motive fluid connecting structure for fluid communication with the motive fluid source.

Diaphragm pumps and pumping systems

A process fluid pump can include a pump chamber, an inlet valve, and an outlet valve. Diaphragm regions can define at least a portion of each of the pump chamber, the inlet valve, and the outlet valve. The diaphragm regions can each have an actuation region with a surface that is convexly shaped when the formed actuation region is in a natural unstressed first state, and each formed actuation region can be actuated by a motive fluid to transition to a second state in which the surface is non-convexly shaped.

Blood treatment system having pulsatile blood intake

A blood treatment system includes (i) a blood pump including a first blood pump chamber operable with a first inlet valve and a first outlet valve, and a second blood pump chamber operable with a second inlet valve and a second outlet valve; (ii) an arterial blood line; (iii) a dialyzer placed in fluid communication with the arterial blood line, wherein the blood pump is provided along the arterial blood line upstream of the dialyzer; and (iv) a venous blood line extending downstream from the dialyzer. The system also includes a processor configured to sequence the first and second blood pump chambers so as to achieve a pulsatile pattern of filling the first and second blood pump chambers and an at least substantially constant pattern of discharging blood from the first and second blood pump chambers to the dialyzer.

Unidirectional valve appliance

The invention relates to a unidirectional valve appliance, in particular a low pressure check valve for use for an infusion comprising a housing with an inlet and an outlet, and with at least one gasket in a pressure chamber. To prevent air entry into the infusion fluid circuit, the appliance includes an interruption of the flow by means of a static vacuum to the inlet and/or outlet or excess pressure at the outlet. This ensures in reliable manner that a flow of the infusion fluid in a reliable manner only when a static excess pressure differential is exposed to the inlet.

Unidirectional valve appliance

The invention relates to a unidirectional valve appliance, in particular a low pressure check valve for use for an infusion comprising a housing with an inlet and an outlet, and with at least one gasket in a pressure chamber. To prevent air entry into the infusion fluid circuit, the appliance includes an interruption of the flow by means of a static vacuum to the inlet and/or outlet or excess pressure at the outlet. This ensures in reliable manner that a flow of the infusion fluid in a reliable manner only when a static excess pressure differential is exposed to the inlet.

Ventil fuer kolbenkompressoren oder pumpen

CHECK VALVE FOR MEDICAL INFUSION LINES AND SIMILAR.

Built-in part for insertion in a gas or liquid line

Einbauteil (1, 10), das als Rückflußverhinderer ausgebildet und in eine Gas- oder Flüssigkeitsleitung einsetzbar ist, mit einem Gehäuse (2), in dessen Gehäuse-Inneren zumindest ein Schließkörper beweglich angeordnet ist, der in Schließstellung eine Durchtrittsöffnung oder mehrere Durchtrittsöffnungen (14) von Zuströmkanälen (13) abdichtet, wobei das Gehäuse (2) aus zumindest zwei Gehäuseteilen (3, 4) zusammengesetzt ist und in zumindest einem Ringbereich die Zuströmkanäle aufweist, die in einer Gehäusekammer münden und wobei zwischen den einander zugewandten Seiten zweier benachbarter Gehäuseteile (3, 4) eine Gehäuseteiledichtung (5) vorgesehen ist, die einstückig mit zumindest einer innerhalb der Gehäusekammer (12) vom Fördermedium bewegbaren Ringmembrane (11) verbunden ist, die den Schließkörper bildet, dadurch gekennzeichnet, dass das Einbauteil zum Einsetzen in eine Flüssigkeitsleitung ausgebildet ist und außenseitig eine Ringdichtung (8) zum Abdichten gegenüber der Flüssigkeitsleitung aufweist und dass diese Ringdichtung (8) einstückig mit der Gehäuseteiledichtung (5) zwischen den einander zugewandten Seiten der Gehäuseteile (3, 4) verbunden ist. Built-in part (1, 10), which is designed as a backflow preventer and can be inserted into a gas or liquid line, with a housing (2), in the housing interior at least one closing body is movably arranged, in the closed position one or more passage openings (14 ) of inflow channels (13) seals, wherein the housing (2) from at least two housing parts (3, 4) is composed and in at least one annular region has the inflow channels, which open in a housing chamber and wherein between the mutually facing sides of two adjacent housing parts ( 3, 4) a housing part seal (5) is provided, which is integrally connected to at least one within the housing chamber (12) movable from the medium ring diaphragm (11), which forms the closing body, characterized in that the insert is designed for insertion into a fluid line is and outside a ...

Disposable infusion cassette with low air bubble retention and improved valves

A disposable cassette for use with a medical infusion pump. An elastomeric membrane is captured between a facing member and a base of the cassette and is displaced into a pumping chamber. The elastomeric membrane includes a generally T-shaped lip, and corresponding grooves are provided on the facing member and base. As the cassette is assembled, an interference fit between the lip and the grooves causes the membrane to stretch taut and to be securely anchored, eliminating a break-in period when the cassette is initially used. 'Lobes' of increased thickness provided on the undersurface of a portion of the elastomeric membrane overlying the pumping chamber reduce the residual volume of the pumping chamber, thereby reducing the volume of air retained within the chamber and increasing the accuracy of the cassette. The lobes also sweep air bubbles from the sides of the pumping chamber during operation, further reducing air bubbles retained in the pumping chamber. A distal tube support retains a distal fluid line between air or pressure sensors included on a pump drive mechanism, thus reducing the likelihood of sensing errors. Inlet and outlet valve flaps and corresponding seating surfaces included in the base are configured to provide quieter operation, further reduce the residual volume of the pumping chamber, increase fluid velocity through the outlet valve to sweep air bubbles from the pumping chamber, and protect against a 'blown' inlet valve.

Fuel pump

Disposable infusion cassette with low air bubble retention and improved valves

A disposable cassette for use with a medical infusion pump. An elastomeric membrane is captured between a facing member and a base of the cassette and is displaced into a pumping chamber. The elastomeric membrane includes a generally T-shaped lip, and corresponding grooves are provided on the facing member and base. As the cassette is assembled, an interference fit between the lip and the grooves causes the membrane to stretch taut and to be securely anchored, eliminating a break-in period when the cassette is initially used. “Lobes” of increased thickness provided on the undersurface of a portion of the elastomeric membrane overlying the pumping chamber reduce the residual volume of the pumping chamber, thereby reducing the volume of air retained within the chamber and increasing the accuracy of the cassette. The lobes also sweep air bubbles from the sides of the pumping chamber during operation, further reducing air bubbles retained in the pumping chamber. A distal tube support retains a distal fluid line between air or pressure sensors included on a pump drive mechanism, thus reducing the likelihood of sensing errors. Inlet and outlet valve flaps and corresponding seating surfaces included in the base are configured to provide quieter operation, further reduce the residual volume of the pumping chamber, increase fluid velocity through the outlet valve to sweep air bubbles from the pumping chamber, and protect against a “blown” inlet valve.

Pump valve

The inlet and discharge valves of a pump are each comprised of a circular valve plate centered in a circular cutout in a flat valve sheet. Diametrically opposed webs join the valve plate to the main body of the valve sheet and perforations in the webs provide both, spring action and allow for air passage.

Pressure limiting valve

Manifold for infusing medical fluids

A fluid manifold includes a housing having a first inlet and an outlet and a plurality of inlets intermediate the first inlet and the outlet which are provided with check valve action to prevent retrograde flow through the valved inlets, yet allow individual inlets to pass fluid when the fluid pressure in any individual inlet exceeds that of the interior of the chamber by a predetermined cracking pressure. The check valve action is provided by a single resilient backcheck member which is deformably urged against annular valve seats by support members embodied in the housing opposite and central to the valved inlets. A conventional injection site may be provided in the housing so that additional fluids may be injected into the interior of the manifold through an inserted cannula. A chamber within the manifold is configured to direct a flowstream through the manifold onto and around the resilient backcheck member and all interior surfaces, eliminating dead space where air or fluids may collect, and enhancing flushing of the manifold. This enables simultaneous or sequential administration of multiple medicaments in low volume applications.

Diaphragm pump and pumping systems

A process fluid pump can include a pump chamber, an inlet valve, and an outlet valve. Diaphragm regions can define at least a portion of each of the pump chamber, the inlet valve, and the outlet valve. The diaphragm regions can each have an actuation region with a surface that is convexly shaped when the formed actuation region is in a natural unstressed first state, and each formed actuation region can be actuated by a motive fluid to transition to a second state in which the surface is non-convexly shaped.

check valve

Rückschlagventil mit einem ersten Schlauchanschlussgehäuse und einem zweiten Schlauchanschlussgehäuse und einer zwischen beiden Schlauchanschlussgehäusen angeordneten Membranscheibe aus flexiblem Material, welche zwischen den beiden Schlauchanschlussgehäusen eingeklemmt und gegen einen in einem Eingangsraum angeordneten Ventilsitz vorgespannt ist und bei Überdruck im Eingangsraum von dem Ventilsitz abhebbar ist und einen Durchflussquerschnitt zu einem Ausgangsraum freigibt, dadurch gekennzeichnet, dass der Ausgangsraum (12) mit einem bei Überdruck öffnenden Einwege-Entlastungsventil (16) verbunden ist. Check valve with a first hose connection housing and a second hose connection housing and a membrane disc made of flexible material arranged between the two hose connection housings, which is clamped between the two hose connection housings and biased against a valve seat arranged in an input space and can be lifted off from the valve seat in the event of excess pressure in the input space and has a flow cross section releases an exit space, characterized in that the exit space (12) is connected to a one-way relief valve (16) which opens at excess pressure.

Exhaust valve

Double diaphram check valve

A double elastic diaphragm check valve for dealing with a liquid on the upstream side and liquid and gas on the downstream side is provided. None of the metallic parts move, avoiding frictional wear nor are there metal parts subject to stress corrosion. The structure is free of internal threads and other crevices susceptible of retaining dirt or other foreign matter. In normal operating sequence and even simple abnormalities the valve vents only gas avoiding liquid spillage.

Diaphragm valve for medication infusion pump

A valve, suitable for use in small medical devices and which can readily be made of medical grade materials, comprises an elastic diaphragm stretched over a protruding surface, preferably of spherical or convex shape. The diaphragm has a ring of holes concentrically around a hole in the protruding surface. A mating recess, connected to a conduit, fits over the protruding surface. The elastic material is held in place at or near the opening of the recess. The holding structure may also serve to seal the valve. A dual arrangement provides an input and an output valve in combination.

Low pressure measurement devices in high pressure environments

The present invention presents various novel approaches to solving the problems inherent in measuring biological pressures in high pressure systems. Thus, to protect a pressure transducer exposed to fluid flows at higher pressures than its overpressure rating, a novel valve is used that closes a protected leg in which the transducer is located. The various exemplary embodiments of such valves each have a high pressure input, one or more low pressure inputs, and an output. In operation, when a high pressure fluid flow occurs at a high pressure input, such valves automatically close the low pressure inputs. Alternatively, a novel transducer system is presented, which automatically limits the effective pressure sensed by a transducer to a certain maximum.

Pneumatic control system and pneumatic control device therefor or the like

A pneumatic control device comprising two cup-shaped housing members respectively having open ends and end wall means recessed from the respective open ends thereof, each end wall means having an inlet therein and a valve seat surrounding the respective inlet and projecting beyond its respective end wall means toward the open end of its respective housing member. The housing members are secured together in a snap-fit relation with the open ends thereof telescoped together. A flexible diaphragm has an outer peripheral means thereof secured between the open end of one of the housing members and the end wall means of the other housing member, the diaphragm being movable between and being selectively engageable with said valve seats and having an opening means passing therethrough outboard of the valve seats and always disposed in fluid communication with an outlet of the control device.

Low pressure measurement devices in high pressure environments

The present invention presents various novel approaches to solving the problems inherent in measuring biological pressures in high pressure systems. Thus, to protect a pressure transducer exposed to fluid flows at higher pressures than its overpressure rating, a novel valve is used that closes a protected leg in which the transducer is located. The various exemplary embodiments of such valves each have a high pressure input, one or more low pressure inputs, and an output. In operation, when a high pressure fluid flow occurs at a high pressure input, such valves automatically close the low pressure inputs. Alternatively, a novel transducer system is presented, which automatically limits the effective pressure sensed by a transducer to a certain maximum.

Low pressure measurement devices in high pressure environments

The present invention presents various novel approaches to solving the problems inherent in measuring biological pressures in high pressure systems. Thus, to protect a pressure transducer exposed to fluid flows at higher pressures than its overpressure rating, a novel valve is used that closes a protected leg in which the transducer is located. The various exemplary embodiments of such valves each have a high pressure input, one or more low pressure inputs, and an output. In operation, when a high pressure fluid flow occurs at a high pressure input, such valves automatically close the low pressure inputs. Alternatively, a novel transducer system is presented, which automatically limits the effective pressure sensed by a transducer to a certain maximum.

Low pressure measurement devices in high pressure environments

The present invention presents various novel approaches to solving the problems inherent in measuring biological pressures in high pressure systems. Thus, to protect a pressure transducer exposed to fluid flows at higher pressures than its overpressure rating, a novel valve is used that closes a protected leg in which the transducer is located. The various exemplary embodiments of such valves each have a high pressure input, one or more low pressure inputs, and an output. In operation, when a high pressure fluid flow occurs at a high pressure input, such valves automatically close the low pressure inputs. Alternatively, a novel transducer system is presented, which automatically limits the effective pressure sensed by a transducer to a certain maximum.

Low pressure measurement devices in high pressure environments

The present invention presents various novel approaches to solving the problems inherent in measuring biological pressures in high pressure systems. Thus, to protect a pressure transducer exposed to fluid flows at higher pressures than its overpressure rating, a novel valve is used that closes a protected leg in which the transducer is located. The various exemplary embodiments of such valves each have a high pressure input, one or more low pressure inputs, and an output. In operation, when a high pressure fluid flow occurs at a high pressure input, such valves automatically close the low pressure inputs. Alternatively, a novel transducer system is presented, which automatically limits the effective pressure sensed by a transducer to a certain maximum.

Low pressure measurement devices in high pressure environments

The present invention presents various novel approaches to solving the problems inherent in measuring biological pressures in high pressure systems. Thus, to protect a pressure transducer exposed to fluid flows at higher pressures than its overpressure rating, a novel valve is used that closes a protected leg in which the transducer is located. The various exemplary embodiments of such valves each have a high pressure input, one or more low pressure inputs, and an output. In operation, when a high pressure fluid flow occurs at a high pressure input, such valves automatically close the low pressure inputs. Alternatively, a novel transducer system is presented, which automatically limits the effective pressure sensed by a transducer to a certain maximum.

Low pressure measurement devices in high pressure environments

The present invention presents various novel approaches to solving the problems inherent in measuring biological pressures in high pressure systems. Thus, to protect a pressure transducer exposed to fluid flows at higher pressures than its overpressure rating, a novel valve is used that closes a protected leg in which the transducer is located. The various exemplary embodiments of such valves each have a high pressure input, one or more low pressure inputs, and an output. In operation, when a high pressure fluid flow occurs at a high pressure input, such valves automatically close the low pressure inputs. Alternatively, a novel transducer system is presented, which automatically limits the effective pressure sensed by a transducer to a certain maximum.

Low pressure measurement devices in high pressure environments

The present invention presents various novel approaches to solving the problems inherent in measuring biological pressures in high pressure systems. Thus, to protect a pressure transducer exposed to fluid flows at higher pressures than its overpressure rating, a novel valve is used that closes a protected leg in which the transducer is located. The various exemplary embodiments of such valves each have a high pressure input, one or more low pressure inputs, and an output. In operation, when a high pressure fluid flow occurs at a high pressure input, such valves automatically close the low pressure inputs. Alternatively, a novel transducer system is presented, which automatically limits the effective pressure sensed by a transducer to a certain maximum.

Low pressure measurement devices in high pressure environments

Check valve

A check valve is provided, including a first hose connector housing defining an entry passage and a first valve seat, a second hose connector housing engaging the first hose connector housing and defining an exit passage, a generally flexible, perforate membrane disk positioned between the first and second hose connector housings and pretensioned against the first valve seat to selectively sealingly separate the first and second hose connector housings, and a one-way relief valve fluidly connected with the exit passage and configured to permit venting of the exit passage upon overpressurization thereof.

Valued device for controlling vacuum in surgery

Apparatus and method for applying aspiration, irrigation, medication and ultrasonic power and dwell time to biotissue for surgery and treatment wherein the pressure for both aspirating and irrigating is precisely and accurately maintained by the use of a differential valve and a control reservoir which is generally much larger than the biotissue cavity to be operated on and wherein the pressures for irrigation, aspiration, medication and the application of the amplitude and dwell time of ultrasonic energy can be precisely controlled, externally, to the patient.

One-way valve means

Die Erfindung betrifft eine Einweg-Ventileinrichtung 1, insbesondere ein Niederdruck-Rückschlagventil zur Verwendung für ein Infusionsbesteck, bestehend aus einem Gehäuse 2, 3 mit einem Zuleitungs- 5 und Ableitungsrohr 14 und mit zumindest einer in einem Druckraum 12 einliegenden Dichtung 4. Zur Vermeidung eines Lufteintritts in den Infusionsflüssigkeitskreislauf wird erfindungsgemäß vorgeschlagen, dass durch einen an dem Zuleitungs- 5 und/oder Ableitungsrohr 14 anstehenden statischen Unterdruck oder ein Überdruck an dem Ableitungsrohr 14 eine Unterbrechung des Durchflusses erfolgt. Hierdurch wird in zuverlässiger Weise sichergestellt, dass eine Strömung der Infusionsflüssigkeit nur beim Anliegen eines statischen Überdruckes an dem Zuleitungsrohr stattfindet. The invention relates to a one-way valve device 1, in particular a low-pressure check valve for use with an infusion set, consisting of a housing 2, 3 with a feed pipe 5 and drain pipe 14 and with at least one seal 4 lying in a pressure chamber 12 According to the invention, air entry into the infusion liquid circuit is proposed such that the flow is interrupted by a static vacuum present on the supply pipe 5 and / or discharge pipe 14 or an overpressure on the discharge pipe 14. This reliably ensures that a flow of the infusion liquid only takes place when a static overpressure is applied to the supply pipe.

One-way valve device

The invention relates to a one-way valve device (1), in particular a low-pressure non-return valve for use with infusion equipment. Said device consists of a housing (2, 3) comprising a supply tube (5) and a drain tube (14), in addition to at least one seal (4) that is enclosed in a pressure chamber (12). To prevent the admission of air into the infusion liquid circuit, the flow is interrupted by a static negative pressure prevailing on the supply tube (5) and/or drain tube (14) or by an excess pressure on the drain tube (14). This reliably guarantees that the infusion liquid only circulates if there is a static excess pressure on the supply tube.

DISPOSABLE VALVE DEVICE

One-way valve device

The invention relates to a one-way valve device (1), in particular a low-pressure non-return valve for use with infusion equipment. Said device consists of a housing (2, 3) comprising a supply tube (5) and a drain tube (14), in addition to at least one seal (4) that is enclosed in a pressure chamber (12). To prevent the admission of air into the infusion liquid circuit, the flow is interrupted by a static negative pressure prevailing on the supply tube (5) and/or drain tube (14) or by an excess pressure on the drain tube (14). This reliably guarantees that the infusion liquid only circulates if there is a static excess pressure on the supply tube.

One-way valve device

The invention relates to a one-way valve device (1), in particular a low-pressure non-return valve for use with infusion equipment. Said device consists of a housing (2, 3) comprising a supply tube (5) and a drain tube (14), in addition to at least one seal (4) that is enclosed in a pressure chamber (12). To prevent the admission of air into the infusion liquid circuit, the flow is interrupted by a static negative pressure prevailing on the supply tube (5) and/or drain tube (14) or by an excess pressure on the drain tube (14). This reliably guarantees that the infusion liquid only circulates if there is a static excess pressure on the supply tube.

One-way valve device

Priming pump with reed valve

A fluid priming pump in combination with a reed valve for the control of incoming and exiting fluid flow is disclosed. The fluid priming pump includes a pump body and a movable plunger with the reed valve positioned adjacent the pump body. Two embodiments of the reed valve are disclosed, including an integral design where the unitary valve panel is insert molded with the valve body. In the second embodiment, the unitary reed valve is based on co-injection molding technology. Each reed valve design comprises only two component parts and becomes operable without the need for any additional mechanical components or fasteners. Pressure forces created by the fluid priming pump govern the opening and closing of valve panel portions for controlling the incoming and exiting fluid flow through the fluid priming pump.

Bi-directional pressure relief valve for a plate fin heat exchanger

A bi-directional pressure relief valve for a plate fin heat exchanger including an elongated heat exchanger tube having ends and a channel for the flow of a fluid from one end of the tube to the opposite end and a bi-directional reed valve positioned within the channel. The reed valve allows fluid to flow within the channel in either direction when a pressure differential across the reed valve is sufficient to urge the reed valve to an open position, thereby enabling the heat exchanger to be used independent of the direction of fluid flow through the heat exchanger.

Siphonless trap

One-way valve device

The invention relates to a one-way valve device (1), in particular a low-pressure non-return valve for use with infusion equipment. Said device consists of a housing (2, 3) comprising a supply tube (5) and a drain tube (14), in addition to at least one seal (4) that is enclosed in a pressure chamber (12). To prevent the admission of air into the infusion liquid circuit, the flow is interrupted by a static negative pressure prevailing on the supply tube (5) and/or drain tube (14) or by an excess pressure on the drain tube (14). This reliably guarantees that the infusion liquid only circulates if there is a static excess pressure on the supply tube.

One-way valve device

The invention relates to a one-way valve device (1), in particular a low-pressure non-return valve for use with infusion equipment. Said device consists of a housing (2, 3) comprising a supply tube (5) and a drain tube (14), in addition to at least one seal (4) that is enclosed in a pressure chamber (12). To prevent the admission of air into the infusion liquid circuit, the flow is interrupted by a static negative pressure prevailing on the supply tube (5) and/or drain tube (14) or by an excess pressure on the drain tube (14). This reliably guarantees that the infusion liquid only circulates if there is a static excess pressure on the supply tube.

Rückschlagventil für medizinische Infusionsschläuche und dergleichen

Flow variation valve assembly

A non-implantable valve assembly and a method for controlling flow rates in a medical device are provided. The valve assembly includes a valve member being dimensioned for reception at least partially within a lumen of the medical device. The valve member includes a flow regulator for controlling flow rates in a first direction having a first rate and a second direction having a second rate. The second rate is greater than the first rate.