Square Towel Radiator Valve Leaking

Discussion in 'Plumbers' Talk' started by Balal Akram, Mar 24, 2020.

  1. Balal Akram

    Balal Akram New Member

    The valve seems to be leaking between the two squares as shown by the red arrow. I have been told try removing the square cap on the left as shown by the blue arrow. I have tried to prize this slowly with a screwdriver but doesn't seem to be budging. There are no signs of any grub screws. Any ideas?

    Attached Files:

  2. CGN

    CGN Well-Known Member

    If definitely no grub screw, then it should 'prise' off. Worst case, partial drain down and renew the valves. They're not expensive, but obviously a pita if you need to get someone in to do it for you.
    Heat likes this.
  3. The Teach

    The Teach Well-Known Member

    seen many of those minimalist square/cube towel radiator valves leaking,some of the handles have a securing screws. Some handle pull off the splines on the internal valve insert and some handles are bonded (glued) onto the valve insert splines.

    Just change both valves,same for same is the cheapest option and they will last a few years as long as the heating system water is not contaminated/corrosive.

    Best idea is to fit known decent chrome angled valves supplied by Pegler Terrier,there not so designer but a proper valve. Due to them being larger than the existing cube valves,they will need pipe alterations.

    Heat likes this.
  4. Balal Akram

    Balal Akram New Member

    Okay here's an update. Managed to prise off the square cap to reveal a cartridge as shown. Not sure if you can get a replacement cartridge if this is custom or standard? Or better to replace whole valve ?

    Attached Files:

    Last edited: Mar 25, 2020
  5. Heat

    Heat Well-Known Member

    Not worth trying to source and pay for cartridges. Just replace both valves. IMO they are horrible looking anyhow and you could get the rounded body versions at very little cost.
    If you wanted to try sealing those works temporarily, there will be one (or two) small O ring in the spindle, but delicate to take works apart. I wouldn’t bother. Real rubbish and not designed for to take heat
  6. CGN

    CGN Well-Known Member

    Problem with ceramic disc cartridges is that physically, they all differ a bit and splines not standardised...although you may get lucky. Prob best to replace valves.
    Balal Akram and Heat like this.

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