Cheers Terry.
Thanks again for reply, much appreciated.
Looking at that old trv, in the pic,and new ones I had fitted to new rads in kitchen in March, it looks as if it’s deeper to the olive, so may have to cut a bit of pipe from olive to end of pipe going in to the Trv so it makes contact with the existing olive ?
Have had to do this in the past I think !
Unless I can get a trv that’s as deep as existing one so it makes contact with the olive.
Could do with taking it off and going to
Screwfix with it see if they are all standard depth now.
Do you know.
It’s an old westherm.
Can you see the difference ?
The other two are different, one is the same, and the other is a shallower one.
C H system in this house is a Heinz 57 mix.
All sorts of pipes, rads,fittings, even imperial pipe underfloor.
Doing one job nearly always leads to another, that’s why ,if it’s working ,I leave it, but not for long, cannot, it bugs me.