Plastic mains with compression fittings

listermint

I've a 3/4 plastic mains coming into a sink in the toilet near kitchen. But the T junction on it is seeping. Will need to replace it.

What compression fittings will work on a plastic mains. Black. It's not qual, it's mains pipe older 1970s construction.

I presume a normal 3/4 compression t is no good for this function

K.Flyer

Standard fittings will not go straight onto this pipe, you will need to get your hands on the adaptors which need to be glued on.

my3cents

K.Flyer wrote: »

Standard fittings will not go straight onto this pipe, you will need to get your hands on the adaptors which need to be glued on.

Really

Black pipe that is 3/4 inch on the outside sounds like 1/2 heavy gauge to me. Easy to get Philmac or 3/4 brass compression with inserts would do the job.

K.Flyer

my3cents wrote: »

Really

Black pipe that is 3/4 inch on the outside sounds like 1/2 heavy gauge to me. Easy to get Philmac or 3/4 brass compression with inserts would do the job.

Yeah there was this bestard hard brittle black mains pipe used around the 70s, I think wavin made it. Loads of houses in the older parts of Tallaght have it and its a pain when you come across it.
Its glued jointed with adaptors to go back to instantor. I always keep one 3/4" and a 1/2" adaptor incase I ever run into it.
Did you ever come across copper tube that was larger than 22mm but smaller than 1", used to find it in some old original Guinness built houses, but rare nowadays.

my3cents

K.Flyer wrote: »

Yeah there was this bestard hard brittle black mains pipe used around the 70s, I think wavin made it. Loads of houses in the older parts of Tallaght have it and its a pain when you come across it.
Its glued jointed with adaptors to go back to instantor. I always keep one 3/4" and a 1/2" adaptor incase I ever run into it.
Did you ever come across copper tube that was larger than 22mm but smaller than 1", used to find it in some old original Guinness built houses, but rare nowadays.

Not a plumber but have come across plenty of odd sizes of pipe, never seen the black one you are on about be have seen a similar glued one in grey and an almost transparent white.

Did quite a bit of work with irrigation systems and they used to use a lot of glued joints on large pipe work up to 3 inch.

Dtp1979

K.Flyer wrote: »

Yeah there was this bestard hard brittle black mains pipe used around the 70s, I think wavin made it. Loads of houses in the older parts of Tallaght have it and its a pain when you come across it.
Its glued jointed with adaptors to go back to instantor. I always keep one 3/4" and a 1/2" adaptor incase I ever run into it.
Did you ever come across copper tube that was larger than 22mm but smaller than 1", used to find it in some old original Guinness built houses, but rare nowadays.

Ah you mean 26mm pipe? No I haven’t .
I too have only seen the dark grey version. Horrible stuff. I’ve often used a gas torch and compression fitting and made the pipe fit