Municipal
Search
Browse catalog by:

Model 730-55

Pressure Relief/ Sustaining Valve

The Model 730-55 Pressure Relief/Sustaining Valve with Solenoid Control is a hydraulically operated, diaphragm actuated control valve that sustains minimum pre-set, upstream (back) pressure regardless of fluctuating flow or varying downstream pressure. It also either opens or closes in response to an electric signal. When installed as a circulation valve, the Model 730-55 relieves excessive line pressure when above maximum pre-set.
 

Features and Benefits

  • Line pressure driven – Independent operation
  • Solenoid controlled
    • Low power consumption
    • Wide ranges of pressures and voltages
    • Normally Open, Normally Closed, or Last Position
  • Balanced seal disk – High relief flow capacity
  • In-line serviceable – Easy maintenance
  • Double chamber design
    • Moderated valve reaction
    • Protected diaphragm
  • Flexible design – Easy addition of features
  • Variety of accessories – Perfect mission matching
  • “Y” or angle, wide body – Minimized pressure loss
  • Semi-straight flow – Non-turbulent flow
  • Stainless Steel raised seat – Cavitation damage resistant
  • Obstacle free, full bore – Uncompromising reliability
  • V-Port Throttling Plug – Low flow stability

Typical Applications

Circulating Valve with Reservoir Overflow Protection
Water is supplied to the consumer network from the reservoir or directly from the major supply network:

  • During pumping from the reservoir, the Normaly Closed Model 730-55, with energized solenoid, serves as a circulation valve.
  • During direct supply, pressure might be higher than pilot setting, possibly causing reservoir overflow. The de-energized solenoid keeps the Model 730-55 closed, preventing reservoir filling from this source.