Modulating valve construction

This disclosure is directed to a fluid mixing system utilizing modulating valves responsible to the pressure of an independent actuating fluid operating on a diaphragm operatively connected to the valving member for controlling the fluid flow therethrough. The disclosure further contemplates controlling the pressure of the valve actuating fluid in response to temperature. The disclosure also contemplates a diaphragmed mixing valve for controlling the mixing of at least two fluids in response to the temperature of the resulting mixed fluids.

Electric switch

Electric current rectifier

Heat-reaction product comprising barium or molybdenum sulfides, metal phosphates andmetal dioxides

Thermal sensing device

The device is adapted to be used with an external circuit for controlling the operation of associated equipment and comprises sensing means the impedance of which varies in proportion to the ambient temperature. The sensing means is provided with leads to connect the same to the control circuit. In energy exchanging relationship with the sensing means is the heat producing portion of a heater; said heater having terminals for connection to the associated equipment so that the temperature of the heater varies in proportion to a parameter of the associated equipment. An enclosure receives the heat producing portion of the heater and the sensing means therein to concentrate the heat generated by the heater. Additionally, a housing surrounds the enclosure to insulate the enclosure from the external temperature.

Valve construction

Snap acting valve and control mechanism therefor

Resistance materials and elements

Snap acting valve and control mechanism therefor

Electric control element

Ventilbetaetigungsvorrichtung

Sensor and method of making same

METAL SULFIDE COMPOUNDS AND METAL PHOSPHATE COMPOUNDS ARE COMBINED IN A SELECTED MANNER TO FORM A RESISTANCE METERAL FOR A STABLE SENSOR HAVING A VARIABLE RESISTANCE CHARACTERISTIC IN RESPONSE TO CHANGES IN TEMPERATURE AND VOLTAGE. THE RESISTANCE MATERIAL EXHIBITS A LARGE RESISTANCE VARIATION AS TEMPERATURE OF A MEDIUM BEING SENSED PASSED THROUGH A CRITICAL VALUE. THE CRITICAL VALUE IS SELECTED BY CHOOSING THE TYPES OF COMPOUNDS IN THE SENSOR. RESISTANCE MATERILA IS PREPARED IN A PRESELECTED MANNER TO OBTAIN RELIABLE PERFORMANCE CHARACTERISTICS THROUGHOUT ADVERSE ENVIRONMENTAL CONDITIONS. AN OXIDE OF A METAL ALSO PRESENT IN THE ELECTRICAL LEADS CONNECTED TO THE SENSOR IS DISPERSED THROUGHOUT THE SENSOR TO PROVIDE STRONG LEAD ATTACHMENTS.