Leaking stop tap

[victor71]

been to fix a leaking stop tap in downstairs toilet it was black plastic pipe on one end & 15 mm copper pipe onthe other. The plastic pipe is coming under the concrete floor.I assumed the black plastic pipe 2 b 20mm mdpe pipe& bought a 20 to 15 mdpe fitting. Took old fitting off, 20mm side is too big & doesnt fit, neither does 15mm which is too small. Took the peice of pipe to plumbing merchant. Found out its old polypipe. Tried different shops, nobody stocks the fittings for this pipe. cant even put the old stop tap back as its broken.
Can anybody help please?

 

[newbuildinstaller]

buy a imperial sized olive and put that into a 22mm straight compression connector. Then tighten this onto your black pipe as far as you can. Iv done this before and it works. Once you have tightened it you can always loosen the connector off again and inspect the olive to make sure it has a good hold.

 

[Happyplumber]

If the old stop tap is sound in all other ways ,apart from a slight leak,then you should refit asap.

Normally all it needs if its leaking is for you to repack the gland with ptfe tape relatively simple for plumber

If you are stuck then its time to call in the professionals very unhygienic without water in the house,might be time to swallow ya pride and pick up the phone

 

[seco services]

sounds like 3/8"" black alkathene.

 

[victor71]

but the 3/4" olive is too big for the plastic pipe.

 

[holty]

sure it was polypipe and not polyorc.hunter did a plastic pipe also back in the copper shortage days.but with your description its a bit confusing.as it sounds like standard black alcathene as mentioned.and many places stock fittings for theses.if its solvent weld plastic ,then thats a different matter.

 

[victor71]

stop tap is leaking on the plastic pipe side.

 

[seco services]

if i remember the 3/8" black alkathene has an OD of 17mm

Philmac universal adapter will fit it.

 

[victor71]

OD of 17mm sounds right.

 

[seco services]

PTS do them.

 

[newbuildinstaller]

the imperial olive works it is very loose when you first put it on but will bite when you tighten it

 

[holty]

or better still 3/8-15mm kuterlite fitting does the job as it should.also get the insert.usually get mine from plumbase.or as mentioned by seco.philmac adaptor.