Bermad WW83Q – PN40 Quick Pressure Relief Valve



Bermad WW83Q – PN40 Quick Pressure Relief Valve

Hydraulically operated, piston-actuated, quick pressure relief valve that relieves excessive system pressure when such pressure rises above a pre-set value. It responds immediately, accurately, and with high repeatability to a rise in system pressure by opening fully. It also provides smooth drip tight closing. BERMAD 800 series valves are hydraulically operated, piston actuated globe valves designed for high-pressure operation. The valves are available in either standard oblique (Y) or angle pattern design.

Their full bore hydrodynamic body provides an unobstructed flow path while their seat assembly and double-chamber unitized actuator can be disassembled without removing the valve body from the pipeline.


  • Robust structure, piston actuated – High pressure service
  • ֺLine pressure driven – Independent operation
  • ֺElegant simplicity
  • Cost effective
  • Simple to maintain
  • Minimal external accessories
  • ֺIn-line serviceable – Easy maintenance
  • ֺDouble chamber
  • Moderated valve reaction
  • Moderated closing curve
  • ֺFlexible design - Easy addition of features
  • ֺSemi-straight flow - Non turbulent flow
  • ֺStainless Steel raised seat – Cavitation damage resistant
  • ֺObstacle free, full bore – Uncompromising reliability


Valve Patterns, Size Range:
“Y” (Globe): 1½-20”; DN40-500
Angle: 1½-18”; DN40-450
Pressure Rating: 40 bar; 600 psi
End Connections: Flanged (all standard)
Plug Types: Flat disc, Cavitation cage
Temperature Rating: 50°C; 122°F for Cold water applications.

Optional higher temperature: Available on request


Bermad WW83Q – PN40 Quick Pressure Relief Valve Bermad WW83Q – PN40 Quick Pressure Relief Valve Brochure