"Terry D" wrote

Don't be tempted use self-cutting valves for you water supplies. I once
fitted one for a outside tap and in the end had to fit a proper T-piece due
to drastic loss of pressure.

fitted it wrong then, didn't you :-)

fwiw, I've had to use 2 in my current house, both times there was no
access to use compression fittings, both times I've had no problems.


RT