replacing TRV

[alan66]

ive just moved into my house and discovered 2 of the radiators do not work i have discovered that the trv pin is sticking.i have pulled the pin up with pliers but still no heat comes through i think the plunger bit is stuck is it poss to free this or will i need to replace them.
if i do replace them is there any special things i need or will a bit of ptfe tape and a new valve(does it matter if its not a trv?)do the job thanks

 

[petetheleak]

Give the pin and Vv a wee rattle to see if it releases , if not alan better off replacing like for like that way you can reuse nut and olive on pipe.

No special tools required couple of adjustable spanners and or grips .

Put a wee wrap o thread tape round olive if you wish , I use liquid ptfe.
Dont overtighten.

Wont do any harm to flush out system and and replace inhibitor as you will have had to drain system.

 

[ollski]

Pulling the pin up won't free them off but a gentle tap on the top of the pin with a light hammer usually does.