I've got a T junction under my sink which has a slight weep.

Two plastic pipes with plastic stiffening end inserts fit into a
conventional brass compression fitting with olives. There's a T off to
a washing machine in copper pipe.

Is it usual to run plastic pipes into a regular compression fitting
like this? If so are there any tips for making it seal properly?

On 26 May 2006 08:20:33 -0700, "andyv" wrote:

I've got a T junction under my sink which has a slight weep.

Two plastic pipes with plastic stiffening end inserts fit into a
conventional brass compression fitting with olives. There's a T off to
a washing machine in copper pipe.

Is it usual to run plastic pipes into a regular compression fitting
like this? If so are there any tips for making it seal properly?

The plastic may be displaced a little from the olive area over time,
despite the inserts. Perhaps half a turn or so on the compression nut
would fix it?
--
Regards,
Mike Halmarack

Drop the (EGG) to email me.

Is it usual to run plastic pipes into a regular compression fitting
like this? If so are there any tips for making it seal properly?

Yes, no problem at all. Some inserts are better than others. I prefer the
Speedfit ones, which have a secondary sealing mechanism using a couple of
O-rings to supplement the olive.

When doing them up, the nuts need more turning than with copper.

Christian.

I think I've got it now.

I decided to cut a new clean end and give it a fresh olive. Fingers
crossed.

Thanks guys.

In message .com,
andyv writes
I think I've got it now.

I decided to cut a new clean end and give it a fresh olive. Fingers
crossed.


The instructions for Hep2O suggest wrapping a few turns of PTFE tape
around the olive before making the joint. I've followed this advice on
a plastic/compression joint and it has worked well (I know that you
don't normally use PTFE ona compression joint)
--
Chris French

"Christian McArdle" wrote in message
...
Is it usual to run plastic pipes into a regular compression fitting
like this? If so are there any tips for making it seal properly?

Yes, no problem at all. Some inserts are better than others. I prefer the
Speedfit ones, which have a secondary sealing mechanism using a couple of
O-rings to supplement the olive.

Speedfit have two types of inserts. The double seal for plastic pushfits and
one without for brass compression joints.

I prefer metal inserts when using brass compression joints. Speedfit are
plastic.