OK, Great but if cheap TRV's dont work (dont understand why this is the case - should I complain IE not fit for purpose!?) could you please recommend a TRV that will.
It has to be bi-flow as I am not aware of the pipe arrangements.
Cheers
Not a plumber but a very, very good DIY'er
Just refitted my daugters bedroom and installed/piped in a new radiator (the old one approx was 20 years old)
THE PROBLEM:
Fitted a TRV and locksheild. Raditor is not getting very hot even when on the highest setting, bedroom is cold. Top of...