Leaking TRV

Discussion in 'Plumbing and Central Heating' started by Helptav, 16 Nov 2021.

  1. Helptav

    Helptav

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    Hi all, i have a leaking trv that has been in our house for 20 odd years,

    It leaks from the Pin, (only when the TRV is on) if you take the TRV off it dries up and seems fine, not that I understand the simple way the TRV works however to save me buying a new TRV and having it fitted (draining down etc) if I put a small hole in the TRV so it isn’t in contact with the pin would this be ok (I know the TRV wont work as intended) I just want to stop the thing working, I know it’s a temp measure I know it needs a new valve, I am thinking as the TRV works it moves the pin so makes it leak (we don’t even use the TRV this is the reason I am suggesting this) look forward to comments
     
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  3. RandomGrinch

    RandomGrinch

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    Hi,

    Unless I'm missing something, why not just keep the TRV head off, until you can get the valve replaced? :)
     
  4. Helptav

    Helptav

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    that sounds like the wife ;) i agree however it lookes unsightly, would my idea work? im not bothered about it destroying the trv?
     
  5. fixitflav

    fixitflav

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    I'm fairly sure if you turn it to max it won't do anything, so same as being removed. If it still does, slacken the nut a tad.
     
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  6. Helptav

    Helptav

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    thanks ^^^
     
  7. Gasguru

    Gasguru

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    Unless you've got white carpets (or you can't pull them up) there's normally no need to drain the system for a rad valve swap. People that do are dragging the job out.
     
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  9. ianmcd

    ianmcd

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    just change the gland nut
     
  10. Helptav

    Helptav

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    What's the going rate to have a new one fitted? Thanks Paul
     
  11. ianmcd

    ianmcd

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    just do it yourself, no need to drain anything, post a pic of your TRV and I will send you a link to the gland
     
  12. Helptav

    Helptav

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    Image as requested are you sure you can replace the gland??
     

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  13. ianmcd

    ianmcd

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    yes you can but you are supposed to use a special tool with that valve, most of us dont, but yes can be done, unfotunately you have a cheap TRV, danfoss ones take seconds to swap the gland
     
  14. spareshunter

    spareshunter

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    New valve time not worth repairing TBH. Just do it and forget it, and look forward to Christmas, simples.

    It looks like 10 mm pipe to me so be prepared for a reducer set inside or a 10 mm valve. Pull carpet back, isolate other valve, release pressure or bung (OH) and Aqua-Vac while doing job if needed.

    We have an extension 15 x 10 mm extended chrome reducer to do away with original reducing set that will create retro fitting problems or buggered up 10 mm olive and pipework
     
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