Fitting European shower trap to 40mm waste pipe

[Caveman]

Hi Everyone,

Can anyone help? I have been searching but with no luck. I am trying to fit a Duravit shower trap which has a 50mm outside diameter euro pipe size outlet. I need to attach it to a 40mm UK size waste pipe and would prefer to solvent weld it as the pipe will be under a tiled floor. Can someone please point me towards what adaptors I can buy to achieve this? I am nervous about using compression fittings given I will never be able to get at this joint once the room is finished.

Thanks,

 

[fowlerboi]

Shower traps are nearly always compression I wouldn't worry too much just crack on

Take a look at Mcalpine multifit which is the purpose made fitting for transition from european pipe sizing. They will have the size you need and are the industry leader in compression waste products

Depending on what plastic that duravit is made from it may not even be solvent weldable. The other option is to put in a different waste fitting and send the duravit back

 

[Caveman]

Thanks fowlerboi,

Good to know. I had always assumed they were glued due to the leakage risk.

 

[Ben-gee]

I’d use McAlpine Z28L which is 50mm to 2”; then use 2” solvent weld pipe which you can reduce down to 1 1/2” if you need to, but if not run it all in 2”and you’ll have no problems.

 

[Caveman]

Thanks Ben-gee,
That's what I was thinking although I've found this:

McAlpine Euro 50mm to 2" UK Waste Pipe Adapter - 39000098

McAlpine Euro 50mm to 2" UK Waste Pipe Adapter Straight adapter to adapt European sized 50mm OD waste pipe to UK sized 2" (55mm OD) waste

www.plumbers-mate-sales.co.uk

which I was thinking of then using with a reducing pipe insert from a swimming pool company:

2 Inch to 1.5 Inch Pipe Reducers | Hot Tub & Spa Plumbing Fittings

Pipe Reducer 2 to 1 5 This pipe reducer has a 2 inch spiggot that glues inside a 2 inch pipe fitting This then provides a 1 5 inch socket for a 1 5 inch pipe to be glued inside Please note that 2 inch and 1 5 inch are just plumbing terms they are not their actual diameters Actual diameters...

www.hottubpartsuperstore.co.uk

Cheers,

David

 

[Caveman]

I also found this which I have an open query on:

Duravit 50mm Adapter 0050460000

Duravit 50mm Adapter 0050460000 We carry a large range of Duravit Spare Parts in stock and can order most parts please call us or email sales

www.bathroomspareparts.co.uk

 

[Ben-gee]

I’m not a fan of pushfit personally and prefer compression as I feel you are more in charge of it - if that makes sense, but either of the above would be fine.

 

[Caveman]

I’m not a fan of pushfit personally and prefer compression as I feel you are more in charge of it - if that makes sense, but either of the above would be fine.

Thanks Ben,

I ended up going with a McAlpine Euro 50mm to UK 2" adapter (compression fittings), a piece of 2" pipe and then a 2" (weld ) straight connector with a 2" to 40mm reducer (weld) which I can then connect to the 40mm welded waste. Phew!

Now, does anyone know an easy way to cut 40mm pipe that is disappearing down an eves gap of a roof (to exit on the outside wall)?! I'm not even sure if a junior hacksaw can fit across the pipe.

Cheers,

David

 

[Caveman]

Do people use a cutting wheel on a drill? That might give a cut at 90 degrees to my arm?

 

[ShaunCorbs]

Inside cutting wheel with an arbor and a drill with a steady hand or a pipe slice for plastic

 

[Caveman]

Thanks Shaun; no access to inside so looks like the pipe slice or a cutting wheel.

Cheers,
David

 

[Ben-gee]

12” 32tpi hacksaw blade, but just the blade- wrap a cloth around it for a ‘handle’.

 

[Caveman]

Thanks Ben,

That sounds like a very pragmatic (and cheap!) solution. The cut does not have to be too square as it is a solvent weld join so plenty of room on the sleeve.

 

[Ben-gee]

No reason you can’t get it square. Just remove the burr with a sharp stanley knife blade or a bit of sandpaper.

 

[fowlerboi]

I use my dremel with a cutting disc all the time cutting from the inside. Its amazing how many times it comes in handy

 

[Caveman]

So have started fitting all the bits together and so far, so good. Thanks to everyone for their suggestions.

The mini-hacksaw blade with a piece of cloth wrapped round it and bent at 90 degrees ended up being the best bet. I tried my dremel but just didn't have enough room to use it. So long as the blade is new it cuts really well with hardly any back and forth motion.