I'm having trouble removing my radiator, how do I cut off the water supply?

[d3v]

Hi all, my radiator that I'm trying to remove to fix a cracked pipe features a thermostatic valve. Upon removing this valve I found a brass plunger that needs to be depressed to cut off the water supply to the radiator however I need some sort of threaded cap to keep this brass plunger in the down position. Does anyone know what these are called and if they come in different sizes?

Pics to follow...

thanks.

 

[Koogatubac]

[/B]
dont unless you want to have to replace your prv

Disagree

 

[TBServices]

Deffo not on a WB!

Agreed. Flipping nightmare.

 

[lame plumber]

Disagree

lets all agree to disgree with KT on this one

 

[R1CKY]

Arghhh! PTFE around the thread :banghead:

 

[Koogatubac]

lets all agree to disgree with KT on this one

Valves are there for a reason. So if a drain off hasnt been used for a while you wouldnt use that valve?
Stop taps that feed mains water, might not of been used for years, you wouldnt touch it to turn water off?
Nonsense.. Lets agree to disagree with your statement.

Am i missing something, this is what the quote says:

 

[dancinplumba]

Disagree

i don't mind 🙂

 

[dancinplumba]

Valves are there for a reason. So if a drain off hasnt been used for a while you wouldnt use that valve?
Stop taps that feed mains water, might not of been used for years, you wouldnt touch it to turn water off?
Nonsense.. Lets agree to disagree with your statement.

Am i missing something, this is what the quote says:

and how many drain offs does the washer stick so that when you unscrew it nowt comes out or it tears and when you tighten it up it leaks ? from my experience virtually everyone. and i always replace the washer now 🙂

 

[PlumbBobBob]

Hi all, I picked up the TRV from a local plumbers merchants early this morning and after much trial and error with draining the boiler and turning off the water supply under the kitchen sink I finally managed to stop the flow of water from the inlet pipe that feeds the radiator.

From then on it was easy, just had to pry off the old valve that was stuck to the old olive, and didn't have any paste so used a nicely fitting ring I had in an o-ring kit. It works perfect, no leaks at all. Thanks for all your help guys!

View attachment 10075

well done thanks for letting us know the outcome (us professionals don't like to see ptfe on threads otherwise very good)

 

[jase158]

can I just point out that lockshields are clockwise to be shut, not anti-clockwise for any future visitors

 

[PlumbBobBob]

can I just point out that lockshields are clockwise to be shut, not anti-clockwise for any future visitors

indeed, righty tighty lefty loosey