Bodgit wrote:
Could you connext a sub-stack with AAV to the tee ? I think you might
need the AAV to prevent siphonage.
What exactly do you mean by a sub-stack? AAV sounds good. I can do
that!

vertical section of soil pipe, waste pipes then connect into this so
above the level of he wc. top of sub stack needs to be higher than
basin/sink to prevent nasty things escaping in event of blockage.
sub-stack + AVV prevents siphonage.

see page 8 of
http://www.hepworthplumbing.co.uk/Hep%20pdfs/IP5_05%20waste%20valves.pdf

--
David Clark

$message_body_include ="PLES RING IF AN RNSR IS REQIRD"