Leaking towel rail at top nut

Discussion in 'Plumbers' Talk' started by Mark Gavienas, Feb 13, 2020.

  1. Mark Gavienas

    Mark Gavienas New Member

    Hi having trouble with water leaking from a top nut on a chrome towel radiator .I think its the heat resistant washer is this an easy job to do myself and are the washers standard size
     
  2. Joe the Plumber

    Joe the Plumber Screwfix Select

    If you mean the bleed screw fitting or the blanking cap (there's one or the other on the top of each 'leg', usually), you can simply try gently tightening it up a bit (clockwise) with a spanner.

    If the 'O' ring that seals them is still leaking, you'll need to turn off both valves at the bottom completely, open the bleed screw to remove any pressure (and to check the valves are indeed off), and then unscrew the fitting, get a new 'O' ring, put it on, re-fit the fitting and turn the valves back on.

    If your valves are the type with chromed cylindrical 'knobs' and haven't been turned off for a while, you'll probably then need to make separate post on here about 'repairing leaking towel rail radiator valves' though....
     
  3. Jimbo

    Jimbo Screwfix Select

    In my recent experience, the castings are incredibly rubbish on towel rails, with burrs, bumps, and threads nowhere near straight.

    The surface the washer will sit against needs to be smooth. If it's bumpy at all then try cleaning it up with some wet and dry. Then refit a new cap and washer as said. If it's simply not straight, try some LS-X.
     
  4. Heat

    Heat Screwfix Select

    The 1/2” vents and plugs for top of towel rails (and other rads) are inexpensive and would do no harm to also replace them.
     
  5. Mark Gavienas

    Mark Gavienas New Member

    Thank you
     
  6. EC1414

    EC1414 New Member

    Hi, I have this problem too, the o ring is protruding a little and a small drip of water leaks daily, unfortunately I too have the taps at the bottom which are temperamental and need to be opened a certain amount or they leak too. Is there a general size for these o rings? Can any thing else be used to patch up the o ring rather than replacing and causing trouble with the taps below please.
     

    Attached Files:

  7. Jimbo

    Jimbo Screwfix Select

    You can get new bleed plugs in a merchant for about a pound. Also see my previous post above.
     
  8. diymostthings

    diymostthings Well-Known Member

    I always wrap the threads and O ring with PTFE tape or alternatively there is a locktite thread seal liquid which will seal the threads as well. The latter is quite expensive for a one-off though.
     
    Heat likes this.
  9. EC1414

    EC1414 New Member

    Hi, I have this problem too, the o ring is protruding a little and a small drip of water leaks daily, unfortunately I too have the taps at the bottom which are temperamental and need to be opened a certain amount or they leak too. Is there a general size for these o rings? Can any thing else be used to patch up the o ring rather than replacing and causing trouble with the taps below please.
     

    Attached Files:

  10. EC1414

    EC1414 New Member

     
  11. EC1414

    EC1414 New Member

    Thank you.
     
  12. EC1414

    EC1414 New Member

    Are they a standard size? If I close taps t the bottom, turn heating off and bleed out any pressure should this then be ok to remove the bleed plug and replace?
     
  13. Heat

    Heat Screwfix Select

    Yes, they are 1/2” threads and standard. Just install as you describe
     
    EC1414 likes this.
  14. Joe the Plumber

    Joe the Plumber Screwfix Select

    Put a thin smear of hand soap (if you can get any at present...ahem) on the 'O' ring before you fit the new bleed fitting. It stops the 'O' ring picking up and getting distorted as you finally nip it up.
     
    EC1414 likes this.
  15. Tricky Dicky

    Tricky Dicky Active Member

  16. EC1414

    EC1414 New Member

Share This Page