New radiator valve

Radiator has slow leak. I'd love to think this is just a case of tightening a nut somewhere, but this looks to me like I need a plumber out to drain the system and fit a new thermostatic valve. Would appreciate any views! Thanks


  • grumbler
    grumbler Forumite Posts: 57,758
    Part of the Furniture 10,000 Posts Name Dropper Photogenic
    I think you need the valve replaced (the bottom part):

    We are born naked, wet and hungry...Then things get worse. :(

    .withdrawal, NOT withdrawel ..bear with me, NOT bare with me
    .definitely, NOT definately ......separate, NOT seperate
    should have, NOT should of
    .....guaranteed, NOT guarenteed
  • BUFF
    BUFF Forumite Posts: 2,178
    Part of the Furniture 1,000 Posts Photogenic Name Dropper
    set the head to maximum & unscrew it from the valve.
    see if the valve is leaking around the pin.
  • ThisIsWeird
    ThisIsWeird Forumite Posts: 2,871
    1,000 Posts Name Dropper
    edited 23 May at 1:58PM
    Hi Paup.
    The fact the verdigris is pretty much everywhere on the valve body suggests it's as BUFF indicates - the leak is coming from under the TRV 'head'.
    So, as he says, open the TRV to max setting, and then grab that serrated round collar - the 'securing ring' - immediately under the white plastic head, and unscrew it. The head should lift off.
    See if the leak is coming from under there. If it is, then there's a chance it can be sorted, but a good close-up photo would help. And if you can sort it, you can always buy just a new 'head' for the valve.
Meet your Ambassadors


  • All Categories
  • 338.8K Banking & Borrowing
  • 248.6K Reduce Debt & Boost Income
  • 447.5K Spending & Discounts
  • 230.7K Work, Benefits & Business
  • 600.7K Mortgages, Homes & Bills
  • 171K Life & Family
  • 243.9K Travel & Transport
  • 1.5M Hobbies & Leisure
  • 15.9K Discuss & Feedback
  • 15.1K Coronavirus Support Boards