RB wrote:
Because there is enough back pressure in the tub spout to get water to
the shower head. Thank your Congressman for legislation back in the
'80s that mandated flow restrictors. That's where the pressure comes
from.


Are you suggesting that flow restrictions have increased to overall
system pressure since less is being wasted? The only way flow restrictions
could come into play, as far as I can see, would be if the tub outlet was
restricted and I have not seen that, have not heard that it was to be
restricted, nor see why it would be restricted. Mine in not restricted and
it is about 10 years old.

--
Joseph E. Meehan

26 + 6 = 1 It's Irish Math