On Thu, 10 Feb 2011 16:14:34 +0000, Red Green wrote:
D goes to a toilet

Hmm, I would say Rick's correct - although I'm (slightly) surprised that
the mixing valve takes in water from one end and halfway down, and the
output is at the other end. Maybe that's right, I just would have guessed
that the "inputs" at at the two ends and the output is in the middle
(with some form of sliding valve internally to control the mix ratio).

Are there arrows or anything on the valve body to indicate that it was
installed correctly? If it was put in wrong then as things are currently
I expect it's acting like a valve that's half closed :-) (and if it was
put in wrong then maybe that explains why the hot feed's been taken out!)

cheers

Jules