I think I've got the right words here - the little spiggot type thing that connects a radiator to its valve. Is that the "tail"?
Anyway, couple of new rads - bog standard. A set of TRVs + lockshields for each rad. PTFE tape on the threads. Adjustable spanner (12") to tighten up these tails.
Once in, then the valves are added on using the supplied compression fittings. And of course the other end of the valve is attached to the pipe.
Pressurise the system (boiler reads 1 bar) and these tails are weeping about 4 drops a minute. Drain rad, loosing compression fitting to valve, somehow get the adjustable back in there and tease another 1/4 turn out of this tail. Re-pressurise and still a slow weep.
What's the trick!?
Anyway, couple of new rads - bog standard. A set of TRVs + lockshields for each rad. PTFE tape on the threads. Adjustable spanner (12") to tighten up these tails.
Once in, then the valves are added on using the supplied compression fittings. And of course the other end of the valve is attached to the pipe.
Pressurise the system (boiler reads 1 bar) and these tails are weeping about 4 drops a minute. Drain rad, loosing compression fitting to valve, somehow get the adjustable back in there and tease another 1/4 turn out of this tail. Re-pressurise and still a slow weep.
What's the trick!?