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  1. RandyB

    Single PRV supplying multiple irrigation zone valves

    In every online search I've done, the usual piping is from the main into a backflow/PVB then into a manifold of control valves, one for each zone. Then for those drip only zones, a PRV (with or without a filter) is put after the valve to reduce the pressure down to 30psi or under then on to the...
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