DEMA 476 Series Brass / Stainless Steel Diaphragm 3/4" 150 PSI Normally Closed Solenoid Valves

DEMA 476 Series diaphragm solenoid valves are available for 3/4” pipe and are constructed of either brass or stainless steel and have stainless steel seats.  When energized, the plunger is pulled to the top plug, thus opening the small “pilot port” in the center of the diaphragm plate.  This releases the pressure on top of the diaphragm allowing incoming pressure to lift it off the large center port.  When de-energized, the solenoid plunger is pushed from the top plug by the kick-off spring and closes the pilot port.  Fluid passes through the diaphragm bleed hole until pressure is equalized on both sides of the diaphragm to shut off the large port.

The 476P series features a brass body with Buna seals and the 476PT series features a brass body with PTFE seals.  The 476PS series is constructed with a stainless steel body and is available with either Buna or PTFE seals.