Pressure Relief/Sustaining Valve

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The BERMAD Model IR-430 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 preset upstream (back) pressure regardless of fluctuating flow or varying downstream pressure. When installed as a relief or circulation valve, it relieves line pressure in excess of preset.

  • Line Pressure Driven Pressure Relief/Sustaining Valve
    ❏ Controls system fill-up
    ❏ Sustains upstream line pressure
    ❏ Relieves excessive pressure protecting pump and system
    ❏ Prioritizes pressure zones

  • Advanced Globe Hydro-Efficient Design
    ❏ Unobstructed flow path
    ❏ Single moving part
    ❏ High flow capacity

  • Fully Supported & Balanced Diaphragm
    ❏ Requires low opening and actuation pressure
    ❏ Excellent low flow regulation performance
    ❏ Progressively restrains valve closing
    ❏ Prevents diaphragm distortion

  • User Friendly Design
    ❏ Easy pressure setting
    ❏ Simple in-line inspection and service

How to work

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