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  1. HFI1

    Back Pressure Regulating Relief Valve...

    I have a system with a 40 gpm pump and I need to regulate the discharge to 200 psi. Downstream I have solenoid valves which could all be open or closed. If they are all closed I need to bypass the 40 gpm back to the inlet of the pump which is fed with city water pressure (20-80 psi). I have...

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