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  1. J

    Do non-return valves fail?

    Confidence draining it is not a problem - did it before and system worked since. And it was all working dandy when plumber left yesterday. Just don't want to remove any evidence in or around the valves. Sounds like they could be the culprit, so I'll get d professional back and pop them out - I...
  2. J

    Correctly bleeding RAD

    There are some tips on the How To section of this site: DIYnot > How to > Plumbing > Problems associated with radiators //www.diynot.com/pages/pl/pl033.php - John.
  3. J

    Do non-return valves fail?

    Greetings. New to this world so apologies in advance for info I didn't add, or added that I didn't need to... 10 yr old bungalow with oil burner (non pressurised, small open tank in attic) integrated with back boiler behind a fireplace. Two worms in hot press, one from back boiler (joined to...
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