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Thread: Valencia sticking -- any tips?

  1. #1
    Automated Home Guru
    Join Date
    Aug 2015
    Posts
    120

    Angry Valencia sticking -- any tips?

    Hi folks, less than three years ago I replaced (at enormous effort) every TRV in the house with brand-new Valencia ones. I find myself less than three years later with my living room TRV sticking shut -- two evenings in a row I've had to take off the HR92 and give the pin a good working. It eventually comes right and seems ok, but I'm not that confident that it's not going to happen again tonight.

    a) Would you expect a supposedly high quality TRV to start sticking after less than three years?
    b) Is there anything I can do to fix this TRV so it stops doing this?

    I'm pretty annoyed and frustrated that I may have to go through all the effort of replacing this, not to mention the possibility of others failing as well!?

    Thanks for any suggestions and/or advice!

  2. #2

    Default

    Do you keep your system topped up with a suitable inhibitor? Might be worth checking if itís not been looked at in a while.

    You can get a servicing kit for the valve bodies - not sure how much it costs but from the data sheet I saw it should allow the valve insert to be removed for inspection/cleaning (without draining down?) and even allows the insert to be replaced without removing the valve. However the cost may mean itís not good value for a DIYer rather than a tradesman who might use it regularly.

  3. #3
    Automated Home Guru
    Join Date
    Aug 2015
    Posts
    120

    Default

    Thanks for the suggestions!

    I haven't topped up the inhibitor since I completely replaced all the TRVs (less than three years ago), do you think 3 years is long enough to produce enough corrosion that it would be causing a TRV to stick? When I bleed the odd radiator, the water is always a very light colour (i.e. very barely brown).

    That TRV Service Tool looks like exactly what I need, but nobody seems to even sell the things, and I get the impression they are very expensive.

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