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PVC to metal waste pipe


expat paul

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Hi,

I've just had a help plea from a friend, who is in the process of fitting a new kitchen in his flat. His problem is fitting the 40mm pvc waste pipe from the sink to the existing system which is a metal 42mm OD pipe.

My only thought is to heat up a 40mm joint (manchon) to get it soft and force it over the metal pipe.

 

Anybody got any other ideas ?

thanks

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Hi

The pipe from the sink should be inside, not outside the metal waste pipe. You say the OD of the metal pipe is 42, so the 40 PVC should'nt  be far out, he can try thinning the PVC, belt sander, grinding wheel etc. 

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Does the steel pipe have a thread, if so a female iron to copper connector and run the waste in 42 copper instead of pvc, male iron to copper if a socket is present on the pipe

The 42 copper will fit the standard plastic trap outlet

You would have to be able to solder as joints in copper would need solder fittings

If it's not threaded you can use a 42 metal connector and a 42 galvanised barrel nipple, the connector is a two peice clamp designed for jointing pipes where there is no thread

With a solution such as this you will get proper watertight joints

You would need to go to a professional plumbing and heating merchant as I doubt these fittings would be available in a brico

Le Plombier

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It is quite possible that a 40mm universal compression coupling will fit the 42mm pipe.

These plastic compression fittings have a fair bit of tolerance in the body and rubber olives.

I have fitted them to both copper and iron pipes. I have no idea if they are available in France though.

Screwfix lists a limited range of them on their website.

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I have found a cheap solution for you

 Look on Cedeo.fr website

Search for Raccor Flex Seal , Code 1701803

It is a rubber connector with two jubilee clips, the reference is for the 32/40dia one but they do 42/50dia as well

The joint is suitable for your application and will take a pressure of 0.5 bar

Cost about  12/15 euros

Cedeo are a national plumbing and heating outlet, they should have a branch near you

Le Plombier

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Products

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Search for Products: 

For use with Plastic Pipes to BS5254 and BS5255, Copper Pipe (Metric or Imperial) and Lead Pipe.

Product
(click image to enlarge)
Code
Description

Z28M
Straight Connector

Z28L-ISO
Straight Connector Multifit × DIN. for Connecting U.K. Waste Pipe to BS5254/BS5255 to European Waste Pipe

MZ18E
Straight Connector - Adjustable

Z29
Straight Connector - Multifit × BSP Female Thread

MZ4
90° Multifit Bend

MZ4-ISO
90° Bend Multifit × DIN. for Connecting U.K. Waste Pipe to BS5254/BS5255 to European Waste Pipe

MZ4L
90° Multifit × Plain End

MZ20
135° Bend

MT20L
135° Bend Multifit × Plain End to suit Multifit

V15M
Swept Tee

Z23M
Blank Cap (without Nut)

ZS26L
Reducer for Fittings 2 inch × 1¼ inch

ZT26L
Reducer for Fittings 2 inch × 1½ inch

Z5M
90° Bend Multifit × BSP Coupling Nut

Z11M
Tank Connector

MZ4-TANK
Bent Tank Connector

Z8M
Loose Nut

ZS31M
Straight Connector 2 inch BSP × 1¼ inch Multifit (Colour Black)
ZT31M
Straight Connector 2 inch BSP × 1½ inch Multifit (Colour Black)
Z31M
Straight Connector 2 inch BSP × 2 inch Multifit (Colour Black)

Z28M-NRV
Non-Return Valve with Top Access for cleaning

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[quote user="tj"]

Hi

The pipe from the sink should be inside, not outside the metal waste pipe. You say the OD of the metal pipe is 42, so the 40 PVC should'nt  be far out, he can try thinning the PVC, belt sander, grinding wheel etc. 

[/quote]

My friend says thankyou, a couple of mins with a belt sander and perfect fit.

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