Pressure Adjustment Valve opens when pilot line pressure drop to the Setting Point
Standard factory set: 3.5 bar (50 psi)
Setting Range: 0.5 – 8 bar (7 – 115 psi)
21 bar (300 psi)
Water upto 80°C (180°F)
The PORV-A is a direct acting on/off valve, actuated by a pressure responsive diaphragm, which tends to reach equilibrium with the set spring force. The PORV-A is held closed by pneumatic or hydraulic pressure, sensed at its control chamber (under the diaphragm). It opens in response to a pressure drop of the wet/dry pilot line to below the set point, and/or in response to pressure being drained from its control chamber by a solenoid or other releasing device. The PORV-A is UL Listed when installed as part of the control trim of UL Listed deluge valves.