Ningbo Kaiven Pneumatic Cylinders Co.,Ltd >> Solenoid Water Valves

Solenoid water valves are used widely in home appliances such as washing machines, dishwashers, ice makers and refrigerators. Industrial and commercial businesses use solenoid water valves in applications such as vending machines, sensor-activated water faucets, sprinkler or irrigation systems and many others which require triggered water flow. Solenoid valves are chosen above other types of valves – such as butterfly or ball valves – because solenoids offer the unique capacity for being activated remotely, by sensor cue or by hysteresis (device memory).

The types of valves which are considered solenoid water valves are typically normally closed (NC), which is to say that the valve’s inactive state blocks the flow of water and releases flow when activated. Water solenoids are also typically pilot-operated diaphragm valves, as opposed to direct-acting. Where direct-acting solenoids have a plunger in direct contact with the valve’s inlet, opening and closing the valve to permit and hinder flow, the pilot-operated solenoid is actually a combination of a pneumatic valve and a smaller solenoid valve. Pilot-operated solenoid valves work with a diaphragm rather than a plunger, using differential pressure to release or hinder flow. Pressure is controlled by a small solenoid vent chamber which activates the valve by lifting a vent and changing internal pressure.