"Aidan" wrote in message
m...
"IMM" wrote in message
...

The diverter tee is similar to a spreader "Y" tee. We don't use
diverter
tees because a simple, cheap in-line restrictor can balance up a
system.
"Y" tees are horrendously expensive.

No, I do not think that a diverter tee is similar to a spreader "Y"
tee. A diverter tee is similar to a tee with an additional in-line
restrictor. If you look at the link I posted, there is a diagram of
one.

An in-line restrictor is adjustable. The diverter tee aims to do the same
job a a spreader tee. A spreader T is a an odd shape and can't be made to
look good on surface pipework in many situations, hence the diverter T.

I am not certain what you mean by a "spreader 'Y' tee" because I
cannot find any other reference to this term. If you mean a Y-shaped
tee, then a diverter tee is definitely not similar.

A Y shaped tee does the same job - deliver equal amounts of flow to both
pipes.