New radiator valve

pauper79

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

I think you need the valve replaced (the bottom part):

BUFF

set the head to maximum & unscrew it from the valve.
see if the valve is leaking around the pin.

ThisIsWeird

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.