Bermad WW73Q Quick Pressure Relief Valve



WW73Q – Quick Pressure Relief Valve AS5081 / WaterMark

The Model 73Q Quick Pressure Relief Valve is a hydraulically operated, diaphragm actuated control valve that relieves excessive system pressure when this pressure rises above the pre-set value. It immediately, accurately, and with high repeatability responds to system pressure rise by fully opening. Model 73Q provides smooth drip tight closing.


  • Line pressure driven - Independent operation
  • Balanced seal disk - High relief flow capacity
  • In-line serviceable - Easy maintenance
  • Double chamber design
    • Moderated valve reaction
    • protected diaphragm
    • optional operation in very low pressure
    • moderated closing curve
  • Flexible design - Easy addition of features
  • Obstacle free flow pass
  • V-Port Throttling Plug (optional) - very stable at low flow

Major Additional Features

  • Flow stem - 73Q - M
  • Position indication - 73Q -5


BERMAD 700 series valves are hydraulically operated globe valves available in either standard oblique (Y) or angle (A) pattern design. They have a full bore hydrodynamic body providing an unobstructed flow path, with a seat assembly and double chamber unitized actuator that can be disassembled from the body as a separate integral unit.


WW73Q – Quick Pressure Relief Valve WW73Q – Quick Pressure Relief Valve Brochure