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Pressure Relief/Sustaining Valve IR-730
The Model 730 Pressure Relief/Sustaining Valve is a hydraulically operated, diaphragm actuated control valve that can fulfill either of two separate functions. When installed in-line, it sustains minimum pre-set, upstream (back) pressure regardless of fluctuating flow or varying downstream pressure. When installed as a circulation valve, it relieves excessive line pressure when above maximum pre-set.
- 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
- 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
Safeguarding Pump Minimum Flow
The Model 730 relieves over pressure caused by excessive pump discharge during low demand. To keep a constant
discharge pressure, the difference between pumped flow and consumer demand can be circulated back to pump suction.