On 24 Oct 2006 15:43:57 -0700 someone who may be
wrote this:-

I guess the consensus is that it's a bad idea.

That particular fitting won't connect to the existing standpipe, as
it is designed to connect to the outlet of a sink.

I'll attempt to replace the trap under the kitchen sink with the
appliance trap like you suggest, though that's the very thing I was
trying to avoid in the first place (due to space restrictions).

That transfers the potential problem to the sink drain, where you
might be emptying a sink when the machine decides to empty.

Provided the standpipe drains away properly I would fit a tee to the
bottom of the standpipe, an elbow and some pipe, to make two
standpipes close together. As long as these are tall enough both
machines should drain together without problems.

If the existing standpipe doesn't drain too well then I would
consider another standpipe running to the stack, as well as sorting
out the existing one. Whether this is easier than squashing an
appliance trap into under your sink depends on your plumbing.

If you are determined to fiddle under the sink then an alternative
to the fitting you are looking at is to fit just an adapter above it
like http://www.screwfix.com/app/sfd/cat/...11180&ts=78596
but as with the fitting you outlined you need to be able to lower
the pipe that emerges from the trap. If you can't do this then the
alternative is either a double sink trap with an adapter like
http://www.screwfix.com/app/sfd/cat/...48625&ts=78596 in the
second outlet or something like
http://www.screwfix.com/app/sfd/cat/...12794&ts=78596
neither of which lower the outlet pipe from the trap. These are
available with one or two hose inlets, either from a plumber's
merchant or a handyman shop.

You may find that you end up with several different fittings in your
"might be useful sometime" box as you play with the different
options. You will then become known in the family as someone who can
do plumbing and they will come in useful elsewhe-)


--
David Hansen, Edinburgh
I will *always* explain revoked encryption keys, unless RIP prevents me
http://www.opsi.gov.uk/acts/acts2000/00023--e.htm#54