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double check valve

  1. T

    Strange noise from double check valve (1)

    Hi all, First post here. I have just installed a new water mains to the house. As soon as it enters the house I have stop tap reducing the 25mm mdpe to 15mm copper. I have fitted a double check valve straight after the stop tap followed by a drain tap and then connecting to the existing...
  2. J

    DCV on mains AND outdoor tap?

    Renovating the kitchen at the moment and thought it was a good opportunity to rip out the old water pipes that had seen better days and fit fresh ones. My main water comes up from under the stairs so I’ve fitted a pegler stopcock before it heads into the kitchen. There’s no sign of a DCV before...
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