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 The Bermad 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.
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Prioritizing pressure zones
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Ensuring controlled pipeline fill-up
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Preventing pipeline emptyingPump overload & cavitation protection
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Safeguarding pump minimum flowExcessive line-pressure protection
Features and Benefits
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Line-pressure driven – independent operation
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Balanced seal disk – high relief-flow capacity
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In-line serviceable – easy maintenance
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Double chamber design
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Moderated valve reaction
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Protected diaphragm
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Flexible design – easy addition of features
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Variety of accessories – perfect mission matching
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"Y" or angle, wide body – minimized pressure loss
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Semi-straight flow – non-turbulent flow
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St. Steel raised seat – cavitation damage resistant
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Obstacle-free full-bore – uncompromising reliability
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V-Port Throttling Plug – low-flow stability
Back to 700 Series Control Valve Line Up
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