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  1. L

    by-pass valves

    Can someone please explain to me the difference between a differential by-pass valve and an automatic by-pass valve. thanks.
  2. L

    firebird combi 90

    Can anybody help?-I have a firebird oil fired combi 90 and at first it stopped working for heating,checked the pump and it had no power going to it when the heating should have been on so I presumed the pump was ok. The hot water was heating up ok and the pump for the hot water was running. I...
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    bath shower mixer problem

    Hi everyone-first post,I have a problem with bath mixer tap with shower attatchment. its a newly fitted one and we have very high cold water pressure and the hot is gravity via cistern and vented cylinder. When we try to use shower mixer we put hot tap on but as soon as we open cold at all it...
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