BERMAD Fire Protection
Pilots
Pressure Operated Relief Valve
Model PORV-0
The PORV is a direct acting on/off valve, actuated by a pressure responsive diaphragm,
which tends to reach equilibrium with an adjustable set spring force.
The PORV 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 is UL Listed when installed as part of the control trim of UL Listed deluge valves.
Materials
Body
■ Stainless Steel 316 ASTM A351 Grade CF8M
■ Forged Brass
■ Nickel Aluminum Bronze ASTM B148 C95800
Springs
■ Stainless Steel
Elastomers
■ NBR
Wetted Parts
■ Stainless Steel 303 & Brass (standard)
■ Stainless Steel 316
■ Monel 400
■ Hastalloy C-276
Orifice
175 mm / 61/4”
■ 9 mm
Pressure Adjustment
Valve opens when pilot line pressure drop to the Setting Point
■ Standard factory set: 1.5 bar (22 psi)
Pressure Rating Instrument Air Inlet
■ 21 bar (300 psi)
Normally Plug Drain
Temperature
■ Water upto 80˚C (180˚F)
Water Inlet
Flow factor 1 /4 ”
■ KV: 1.0 (CV:1.2)
Connections
■ ¼” NPT
Approvals(1)
■ UL-Listed 95 mm / 33/4”
■ VdS Certified
Weight: 2.7 Kg / 6 lbs.
Option:
■ Mechanical Latching type with Manual Reset, model PORV-M.
The PORV-M latches on its open position when pilot line pressure
drops below the set point.
Note: 1: when installed on specific Bermad Deluge valve
bermadfir e@bermad.com • www .bermad.com
The information herein is subject to change without notice. BERMAD shall not be held
liable for any errors. All rights reserved. © Copyright by BERMAD.
