Broken TRV4 valve

Discussion in 'Plumbing and Central Heating' started by patagonia, 30 Nov 2010.

  1. patagonia

    patagonia

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    I think my cleaner must have clipped the TRV4 valve with the hoover or something. I went into our spare bedroom and found it very hot and noticed that the valve top was leaning back against the wall. The white plastic of the head is smashed off at the level of the metal ring. Can I replace the head without draining down and if so how do I do it? Do I have to turn off the lockshield valve, or does it involve draining down the system, which I wouldn't attempt myself. Or do I need a plumber with an ice bag to freeze the pipe?
     
  2. Tibbot

    Tibbot

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    Buy the head unscrew old one, screw on new one. No drain down. Take head with you, make sure it's latest or compare on-line as latest TRV4 head won't fit old body.
     
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  4. hibeealex

    hibeealex

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    Just change the head no need to drain anything, it screws off from the metal ring, then just replace the head
     
  5. patagonia

    patagonia

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    Thanks both. A new head is on its way to me and hopefully I'll manage to do the replacement myself.
     
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