Pressure Relief/Sustaining Valve IR-WW-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

■ UL Listed and FM Approved for
fire protection – FP-730-UL/FM
■ Solenoid control – 730-55
■ Quick pressure relief valve – 73Q
■ Pressure sustaining & reducing valve – 723
■ Check feature – 730-20
■ High sensitivity pilot – 730-12
■ Level control & pressure sustaining valve – 753
■ Pump control & pressure sustaining valve – 743
■ Pump circulation & pressure sustaining valve – 748
■ Electrically selected multi-level settings – 730-45
■ High sensitivity hydraulic positioning – 730-85
■ Electronic pressure sustaining valve – 738-03

English IR WW 730 Product Page
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