If a radiator has no TRV - what does it need instead?

Discussion in 'Plumbing and Central Heating' started by DIYNotIan, 11 Oct 2021.

  1. DIYNotIan

    DIYNotIan

    Joined:
    8 Sep 2010
    Messages:
    883
    Thanks Received:
    19
    Location:
    South West Wales
    Country:
    United Kingdom
    Hey

    Sorry for the very basic question! Just putting my screwfix shopping order together. We'll be putting a radiator in the bathroom and don't want that to have a TRV. So what does it have instead? A lockshield on both sides?

    Any recommendations on what to get for a Stelrad Compact?

    Many thanks
     
  2. Sponsored Links
  3. Mottie

    Mottie

    Joined:
    27 Feb 2017
    Messages:
    19,508
    Thanks Received:
    1,944
    Location:
    Essexshire
    Country:
    United Kingdom
    Yep.
     
    • Thanks Thanks x 1
  4. DIYNotIan

    DIYNotIan

    Joined:
    8 Sep 2010
    Messages:
    883
    Thanks Received:
    19
    Location:
    South West Wales
    Country:
    United Kingdom
    Thanks for confirming.

    I've just had a rummage and found a couple of these:

    IMG_20211011_185452792.jpg

    To demonstrate my ignorance even further.... They're lockshield valves aren't they? If so, the piece on the right - is that part of it? I have two valves, but only one of those pieces.

    Thanks again
     
  5. terryplumb

    terryplumb

    Joined:
    8 May 2017
    Messages:
    6,351
    Thanks Received:
    1,334
    Country:
    United Kingdom
    The part on far right of pic is the valve tail ,joins valve into radiators threaded port.
    The valve is indeed a lockshield.
     
    • Thanks Thanks x 1
  6. Swwils

    Swwils

    Joined:
    2 Jul 2020
    Messages:
    782
    Thanks Received:
    143
    Country:
    United Kingdom
    Just a reminder that not all lockshields are made equal.

    If you are going to use one for balancing, get one with good valve authority.
     
    • Thanks Thanks x 1
  7. Sponsored Links
  8. DIYNotIan

    DIYNotIan

    Joined:
    8 Sep 2010
    Messages:
    883
    Thanks Received:
    19
    Location:
    South West Wales
    Country:
    United Kingdom
    Thank you both :)

    Any recommendations?

    Cheers
     
  9. Swwils

    Swwils

    Joined:
    2 Jul 2020
    Messages:
    782
    Thanks Received:
    143
    Country:
    United Kingdom
    IMI Regutech
     
  10. DIYNotIan

    DIYNotIan

    Joined:
    8 Sep 2010
    Messages:
    883
    Thanks Received:
    19
    Location:
    South West Wales
    Country:
    United Kingdom
    Thanks for the recommendation. They don't seem all that readily available. Not from a google search that is...

    The ones I have are Plumb Centre Tradefix / Wolseley... Presume they're budget, but are they good enough? Our central heating is more of a back up as the main heat in the house is from wood burners. But I don't want anything that's going to leak, and I do like the buy once / buy right philosophy.

    I've only got the one tail though. No idea what happened to the other one but never mind... I presume the plumber can just re-use the tail from the radiator he is replacing? Or else might have one on the van?


    Thanks again
     
  11. denso13

    denso13

    Joined:
    22 Jan 2007
    Messages:
    6,137
    Thanks Received:
    1,147
    Country:
    United Kingdom
    Yes, they are ok.

    Yes and probably...
     
  12. Swwils

    Swwils

    Joined:
    2 Jul 2020
    Messages:
    782
    Thanks Received:
    143
    Country:
    United Kingdom
    Have a look inside the lockshield, if the bore is reduced compared to the fitting then it likely will have good valve authority and really make balancing easier.

    Sometimes the cheap ones are either totally rubbish or surprisingly good.

    Like this:
    [​IMG]
     
Loading...

Share This Page