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Discuss Burst plastic piping. in the Central Heating Forum area at

  1. Martin Dunne

    Martin Dunne New Member

    Hi all,

    I have a recurring problem with my central heating system, the pipework from my boiler to the hot water tank keeps on bursting, it has occurred 3 times now. The pipe is 28mm Hep2o and it is physically splitting the pipe, not blowing off at the fittings.

    The house is 9 years old and this is the 3rd time it has happened, always on the same piece of pipework, should there be some pressure relief to prevent the pipe from bursting as when it bursts it pretty much explodes.

    Does anyone have an idea as to what the issue could be? Is it a defective peice of pipe or is there a fundamental problem with the system?
  2. Ric2013

    Ric2013 Plumber

    How close to the boiler is the pipe? In terms of metres or feet of pipe run.
  3. Martin Dunne

    Martin Dunne New Member

    The closest the pipe has burst is approx 4 metres from the boiler, the furthest is about 7 metres.
  4. Ric2013

    Ric2013 Plumber

    That isn't too close to the boiler.

    If this is a sealed system there should be a pressure release dump set at 3 Bar, often incorporated in the boiler. Hep should be good for 6 Bar even at 90°C...
    • Like Like x 1
  5. Martin Dunne

    Martin Dunne New Member

    Yes it is a sealed system. Boiler is an ideal isans.
  6. Martin Dunne

    Martin Dunne New Member

  7. oz-plumber

    oz-plumber Plumber

    If I were you, I would send the pics to the manufacturer of the pipe.

    I would go as far as requesting someone from the manufacturers to come and inspect the pipe.

    If this has happened on the same piece of pipe on 3 separate occasions, they will be interested in testing the pipe.
  8. Ric2013

    Ric2013 Plumber

    The same batch of pipe, or the same section within your installation?

    I wonder if the PRV is seized?
    • Like Like x 1
  9. ShaunCorbs

    ShaunCorbs S. Mod Trusted Plumber GSR Top Contributor!!

    Wouldn't be in the same spot tho every time
  10. Ric2013

    Ric2013 Plumber

    Yeah, presumably the OP has bought a length and keeps using this batch to repair the damaged section?
  11. scott_d

    scott_d Plumber GSR

    Any rodent problems?
  12. rpm

    rpm Trusted Plumber Top Contributor!!

    No signs of teeth marks on that section of pipe.
  13. Martin Dunne

    Martin Dunne New Member

    The damaged pipe is the original pipework installed when the house was built. I have patched it twice now but obviously something is amiss.
  14. ShaunCorbs

    ShaunCorbs S. Mod Trusted Plumber GSR Top Contributor!!

    If you still have the split piece I would send it to the manufacturer and ask them to analyse it to see if they can pin point it
    • Agree Agree x 1
  15. Harvest Fields

    Harvest Fields Trusted Plumber GSR Top Contributor!!

    Definitely get the manufacturer involved. You never know they may admit fault!!
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