Waste Plumbing, washing machine to 50mm waste pipe?

[Mike13]

Hi,

I am fitting the waste pipe for a new sink, and in the run to the outside I need to tee for a clothes washing machine, what is the simplest adaptor to get from the waste outlet pipe on the washing machine to a 50mm pipe? I have a 50mm Tee I can place, but I need to step from washing machine to ? and then to 50mm.
Any ideas about a simple set of parts? It is solvent weld 50mm pipe.

 

[sxturbo]

usually you just have an upstand which the washing machine waste sits in, or it pushes onto the sink waste.

another option is to get these

https://www.screwfix.com/p/floplast-hose-connector/48625

https://www.screwfix.com/p/floplast-wc38-universal-compression-waste-reducer-white-40mm-x-32mm/69077

https://www.screwfix.com/p/floplast-solvent-weld-reducer-50-x-32mm-white/28457

 

[Mike13]

Hi sxturbo,

This is a totally new bit of piping being fitted, and the washing machine is being relocated. I can use the first and last pieces above, but what do I buy to join them together, presumably I have to buy a length of 32mm pipe to join the reducer, and then another fitting on the end of the 32mm pipe stub to the first item.
So almost there, I hadn't spotted to 50 to 32 reducer before.

 

[denso13]

Wm standpipe with 50mm to 40mm reducer fitted into the 50mm tee. 32mm is too small. Go from the tee to the standpipe in 40mm.

https://www.toolstation.com/washing-machine-trap-76mm-seal/p77636

https://www.toolstation.com/solvent-weld-reducer/p27594

 

[Mike13]

Hi denso13,
I have a push fit + jubilee clip fitting coming out of the washing machine, I dont see how I can join that to the pipe I have going by.

=========T========

So I am inserting a T into the 50mm line going by, I take that up as high as required, then I put the reducer to 40 mm, then I have one of these:
http://www.awin1.com/cread.php?awin...screwfix.com/p/floplast-hose-connector/48625?

What goes between them?

 

[denso13]

So I am inserting a T into the 50mm line going by, I take that up as high as required, then I put the reducer to 40 mm, then I have one of these:

No, you need to fit a trap on the waste pipe to the washing machine, which the standpipe provides. The hose from the machine just loops in to the top of the standpipe.

 

[Mike13]

The hose from the washing machine is currently a pipe going in sideways to the waste pipes and is tightly fitted with a jubilee clip, why cant I do the same here?

It does not have a 180 degree curve that is shown on the end of the dark tubing in your picture.

 

[denso13]

The hose from the washing machine is currently a pipe going in sideways to the waste pipes and is tightly fitted with a jubilee clip, why cant I do the same here?

You can do what you like but it needs a trap in line somewhere.

 

[Mike13]

There is a trap just before the sink, much further "back" along the pipe leading up to the T, does that mean I need a second trap just before the exit through the wall, (that would be another 2 metres along in another room)?

 

[denso13]

Any photos, I really can't picture it?

 

[Mike13]

It is in a Utility room in our new extension, all I have at the moment is the pipe clipped to the wall. There is not much I could take a picture of really.
In the new kitchen there is a sink against an outside wall without mains drainage, so the easiest option is to travel around the external wall of the Utility room on three sides.
Kitchen sink +trap, 50mm pipe along external wall through into Utility room, two right angle bends, done with sweeping bends so rodding should be possible. then on the third wall of Utility room there will be the washing machine, drain then continues through wall back into new build, immediate turn across into old kitchen area where it can then take a final turn out and down into the drain currently used for washing machine.
All told ~10m of 50mm pipe with a gentle slope to hopefully keep it clear. I do have enough height for a final trap if that is required, but if a sealed fitting was ok before, then it ought to be ok here, but I am not a professional plumber, just trying to get it right.

 

[sxturbo]

a sealed fitting is fine, instead of the 32mm coupling i posted my error, you can use this,

https://www.bes.co.uk/solvent-weld-waste-reducer-50mm-x-40mm-white-11879/

and then a straight compression fitting and the washing machine adaptor i posted

 

[denso13]

I do have enough height for a final trap if that is required, but if a sealed fitting was ok before, then it ought to be ok here

You do need a trap on the washing machine, not a "final trap" but one for the machine before it connects to the 50mm

You really shouldn't connect it straight to the waste without a trap. There would be nothing to stop drainage smells coming through the machine.

 

[Sonic70]

Some diagrams or pictures would help. I thought it needs to go into a standpipe with trap as it needs air behind it.

 

[Sonic70]

Also doesn't the top of standpipe to bottom of washing machine need to be a minimum height and the standpipe a certain length.

Victor