Water flow control

Water Flow Control

Water flow control apparatus has a water passage 10 provided with first and second two-way electrically operated valves 11, 12 (3/2 solenoid valve) each having a common port connected to the passage 10. The first valve has a first branch port 15 for connection to a vent and a second branch port 17 for connection to a water source, the normal setting of the first valve having the common port connected to the first branch port (vent). The second valve has a first branch port 16 for connection to a drain and a second branch port 18 for connection to a water consuming system, such as a wet radiator system, the normal setting of the second valve is to have the common port connected to the first branch port (drain). A control system for the valves is arranged to drive both valves from their normal settings when water is to be supplied to the water consuming system. Additionally a check valve 20, preferably a double check valve, is disposed between the supply passage and water consuming system ...