35mm chrome to 32mm solvent weld coupler/adapter?

[Sponge]

I'm fitting a cloakroom basin (under the stairs) and the trap has a 35mm x 300mm chrome extension tube. This is to pass horizontally through an external wall to the waste, which is 32mm black plastic, solvent weld pipe and mounted vertically.

The manual suggests a compression fitting of some sort ('not included') to join the two, but I'd like something discrete. I'd like to see nothing but chrome pipe inside of the wall.

I only had a 50mm core drill bit, so there's a little room for possibly a coupling of some sort. Ideally, I'd go straight through the wall with the 35mm pipe and, via a coupler of some sort, connect to a 32mm 90deg solvent weld elbow.

I'm looking for suggestions, please?

 

[newbuildinstaller]

http://www.drainageonline.co.uk/Chr...X-KMB2CX.htm?gclid=CO-R_bGnp7kCFQTMtAodNWEABg

you can get straight connectors too

 

[Madrab]

If you pipe is 35mm then you may need one of these http://www.wickes.co.uk/42mm-x-35mm-reducer-rseal-42x35/invt/227087/ into a 40mm coupler and then one of these http://www.wickes.co.uk/invt/227088 on the other side with a piece of black 32mm solvent weld to attach to your outside pipe

 

[Sponge]

http://www.drainageonline.co.uk/Chrome-Waste-Pipe-and-Fittings/Chrome-Waste-Pipe-Bend-90-Degree-KMB1CX-KMB2CX.htm?gclid=CO-R_bGnp7kCFQTMtAodNWEABg

you can get straight connectors too

I was hoping for something a little less, bulky. But I'll certainly keep it in mind.

I'll admit I find it frustrating, the different dimensions depending on whether a pipe is UK, EU, compression, push-fit, solvent weld. So, can someone tell me if this would fit?

http://www.mcalpineplumbing.com/was...ttings/straight-cp-brass-x-abs-connector.html

Would my 35mm chrome pipe push into the wider end, with the rubber seal? Leaving the plastic end to weld to a normal 90deg, solvent elbow, outside?

 

[Madrab]

It's not very clear if a 35mm pipe would fit into the right hand side of that coupling if the plastic is 32 mm, a quick shout to McAlpine would clear that up.
The other way would be to use one of these - http://www.wickes.co.uk/35mm-coupling-35g-cb/invt/227083/ and then use a reducer http://www.wickes.co.uk/35mm-coupling-35g-cb/invt/227083/ for a piece of solvent weld pipe on the other end

 

[Hugh Jaleak]

I'd be very wary of putting any sort of joint inside the wall. Better to make the joint just before the pipe enters the wall, maybe not pretty, but you dont want a leak inside the wall.....

 

[Charnwood]

I'd be very wary of putting any sort of joint inside the wall.

Especially a home-fabricated one.

 

[Sponge]

Could you expand on that, please? I'm keen to learn and I'm sure there'll be others reading this thread that would also benefit from anything you have to add.

 

[Dan Robinson]

Isn't it self explanatory?

 

[Charnwood]

The 35mm joint on the trap might take 32mm pipe. Try it. It may need 'packing out' with some PTFE tape.

If it works, 32mm waste pipe is available in a chrome finish.

 

[Sponge]

I emailed McAlpine and their reply was a little disappointing, but understandable. They wouldn't commit to a yes it'll work/no it wouldn't, but stated the part comes with two seals: one to suit 32mm OD pipe and one to suit 35mm OD pipe. They also attached a technical drawing.

If the mods don't mind (copyright?), I'll upload the drawing here for expert analysis.

 

[Sponge]

Isn't it self explanatory?

I'm not very bright; it's very easy for me, and possibly others reading this thread, to misunderstand posts that lack...detail. (Not just yours specifically.) Some more information expanding on the point you're trying to make would really help me. Like I said, I'm keen to learn from any mistakes, but to do that I need to be told how to do things correctly, not just told that I've done them incorrectly.

 

[Sponge]

I found a branch of Plumb Centre that had these in stock so I could check it out. McApline told me it came with two rubber rings, one for 32mm pipe and one for 35mm. Unfortunately, PC said they only come with one fitting and that was the 32mm one. So the pipe wouldn't fit.

I think the fitting would have worked, if it'd been supplied with the seals the manufacturer claimed it should.

Untitled

• Sponge
• 16 Sep 2013
• 1

After discussing the issue with PC and a couple of plumbers that were shopping there, I went with a compact, 32mm compression coupling. It was almost a perfect fit in my 50mm hole and somewhere I can easily access it should the need arise.