On Tue, 03 Oct 2006 14:29:27 +0100, NoSpam wrote:

I came home last night to find a flood in one of the downstairs rooms
and have spent the first half of today opening-up the floor above and
fixing the problem.

When I re-plumbed the house a couple of years ago I used plastic pipe
and Tectite fittings everywhere accessible; but where I couldn't avoid
having joints under the floor I used compression fittings because I
didn't totally trust push-fit. The joint that failed was a compression
elbow on the end of a long straight DHW run - the pipe had completely
pulled-out of the elbow. I presume it was thermal expansion of the long
straight run and an inability of the other "limb" to bend sufficiently.
I've replaced the compression elbow with a tectite elbow and arranged a
longer "limb" on the other side so hopefully there's more flex.

Moral of the story: take expansion seriously and trust push-fit.

Dave

So you used a pipe support ,then there is the olive crimped on to the pipe ,then
the nut holding both to the body of the fitting .....I'm still trying to figure
how the pipe got pulled out .???


Stuart