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  1. G

    Noisy Check Valve

    Noisy Check Valve. I've just installed a check valve (sprung loaded) and it stops the unwanted gravity feed to a bedroom radiator but it is noisy. Will it settled down? The system has just been refilled and there maybe some air to be bled out and I haven't put the inhibitor in yet in...
  2. G

    What kind of one way valve please?

    The underfloor heating return gravity feeds the wrong way up to the bedroom radiator via the bedroom return pipe. What kind of valve will stop this reverse flow please?
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