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    Tap pressure OK then decreases

    Hi. Before I start taking things to pieces I thought I would check with the experts. I have a renovated cottage with all new plumbing from the cold water mains. The system is mains pressure. There is a stopcock, filter, check valve and pressure reducing valve with a gauge. The mains pressure...
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    Double Check Valve Cuts Off Supply

    On my mains supply I have a Stopcock, Double Check Valve and PRV in that order. The mains pressure is around 5 bar and the PRV is set to 3.5 bar. The double check valve and PRV are the right way round. This is in a new build so all pipes currently have isolator valves fitted to the pipe runs...
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