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  1. L

    plumbing and central heating

    i need to change my 3 port mid position valve on my system it has a potterton valve on at the moment but are these valves universal and can i put a different make on ie honeywell
  2. L

    cold rads

    i have a problem with my down stairs rads not getting warm,we have a potterton boiler in the kitchen and a hot water cylinder,pump and 3 port valve in the airing cupboard up stairs ,we have hot water but no heating down stairs ,when i override the 3 port valve and switch it to manual i get...
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