On 07/05/15 12:40, Jim x321x wrote:
Does anyon know if any building reg specifying that the female end of a
coupler must point backwards (uphill, towards the flow source), and the
male end of the coupler must point forward (downhill, in the direction of
the flow)? I have a situation where it would be much more convenient to
have one coupling the other way round.

TIA
Jim


No reg as far as I know - most joints are done with plain pipe into a
female-female coupler anyway.