Hydraulically operated, diaphragm 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 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

Designed to – stand up to the toughest conditions

  • Excellent anti-cavitation properties
  • Wide flow range
  • High stability and accuracy
  • Drip tight sealing

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
Compatible with various standards
High quality materials
In-line serviceable – Easy maintenance

Flow stem – 73Q-M
Position indication – 73Q-S
See relevant BERMAD publication

English WW 73Q Product Page
English WW 700 SIGMA Engineering
English WW 700 SIGMA Ordering Guide