Hi as I've had so much help from this site thought I would ask, next week I'm installing a magnaclean to my central heating so while doing it I thought I may as well install TRV's then I thought may as well install a few new radiators and then lockshields to go with it, funny how the list gets longer and longer...
My question is which side does the TRV need to go on and which side does the lockshield need to go, the reason I ask is that both valves at present look the same. Also how do I tell which is which.
Thanks Olly