Deluge Valve

A solenoid control valve is a variable control valve that opens or closes when an electrical signal is received from a control valve. Their names are hydraulic main valve, three-way solenoid valve and service pilot valve. This check test alternately pressurizes/or reduces the pressure in the diaphragm chamber of the main valve. It can be normally open (the solenoid valve opens when the power is cut) or normally closed (the solenoid valve opens when the power is cut).