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  1. H

    Check Valve, or not

    in work at the mo, so not sure the exact model of boiler. As far as I can remember it's a Baxi, is free standing in a downstairs cupboard, with fairly easy acces to all pipework. Sorry can't be more technically accurate
  2. H

    Check Valve, or not

    I've got a problem with CH radiators heating upstairs, when CH is turned off, and hot water is turned on. I believe this is a common problem with gravity fed hot water systems. I believe the cause of this is that the CH system is as good as acting as a gravity fed heating system itself...
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