Leaking Telescopic Radiator Valve

[1SJC]

Good morning, all,

I recently removed and reattached a radiator when decorating our bedroom. I subsequently noticed that the telescopic valve was slightly leaking when this radiator, or any radiator in the house, was on.

We have a combi system, so I presume that some part of the telescopic valve has failed, and the pressure when the system is running is causing the leak. It's coming from the 'moving' or 'telescopic' part of the valve, and not the nut (and isn't therefore an issue of tightness, I don't believe).

I'm confident in draining the radiator and swapping the part, but I'm slightly unsure of what the specific part I need is. Could anyone please advise?

Many thanks

 

[jj4091]

I used them and they leaked had to extend the pipework

 

[Gasguru]

The telescopic extensions always leak...the o ring inside fails.
Replace it with a solid extension available in various lengths or to be cut down eg..

https://www.screwfix.com/p/tesla-1-2-bsp-male-taper-x-15mm-compression-100mm-chrome-radiator-valve-extender/599HF?tc=WA5&gclsrc=aw.ds&gad_source=1&gad_campaignid=22599672207&gclid=EAIaIQobChMI79HusNXajwMV8Y9QBh0zADYzEAQYAiABEgIp5_D_BwE

 

[Madrab]

+1 - those telescopic tails just leak for fun, terrible things.

As suggested, replace for the rigid type.

 

[1SJC]

The telescopic extensions always leak...the o ring inside fails.
Replace it with a solid extension available in various lengths or to be cut down eg..

https://www.screwfix.com/p/tesla-1-2-bsp-male-taper-x-15mm-compression-100mm-chrome-radiator-valve-extender/599HF?tc=WA5&gclsrc=aw.ds&gad_source=1&gad_campaignid=22599672207&gclid=EAIaIQobChMI79HusNXajwMV8Y9QBh0zADYzEAQYAiABEgIp5_D_BwE

+1 - those telescopic tails just leak for fun, terrible things.

As suggested, replace for the rigid type.

Thank you both. Swapped for a cut-down rigid one this afternoon, and now leak-free.

I'm not sure why the professional plumber we used a few years ago, when initially fitting the new radiators, opted for a telescopic valve, but hey, ho.

Thanks again

 

[Gasguru]

Professional plumber...chancer, he fitted it knowing it will eventually leak and create business.
Post a pic of that lockshield spindle...it looks cheap and again will eventually leak.
Merchants sell crap parts for the dross of this trade to fit and maximise income.
BS2767-10 written on the cap normally indicates a better quality valve as it will have a seperate spindle packing gland...many boiler manufacturers even specify such valves.
Even then you've still got valves being sold with such course threads they'll seize up after several years or such poor valve authority (google it) that balancing will be tricky.

 

[Madrab]

Either that or they are just playing @ being a plumber and in the end, ripping people off.