On Wed, 11 Oct 2006 18:11:22 +0100, Guy King
wrote:

The message
from Frank Erskine contains these words:

Yes - they're widely used for sparge pipes in urinals, where the
horizontal run from bay to bay is in 22mm and the downcomer is 15mm.

See, that's where a dodgy prostate gets you - plenty of time to look at
the fittings.

:-)

Actually a proper sparge pipe is fitted with cap ends and has holes
drilled along its length, for a continuous trough. I was thinking of
the feed to several stalls from the flushing cistern.

--
Frank Erskine