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  1. C

    grunfos homebooster pump

    will adding said pump to an unvented system on the cold water inlet to the cylinder work to any great degree, current water pressure standing is 1.5bar anyone had any dealings with said pump.
  2. C

    wb 440

    has anyone fitted a wb440 we have a job with it on the building spec. have read mi and understand it but never fitted one, how does it compare to the valliant 937 ecotec plus? cheers.
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