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Recent content by nebberchadnezzer

  1. N

    leaking isolating valve

    Hi, would really appreciate some advice, i have a potterton Puma 80 combi boiler, which despite its age works fine, but the return isolator valve has started to leak from the plastic tap switch, what is the best way to change it (does the whole system need draining or just the boiler. cheers
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