Connection from new sink trap

[ChrissyPy]

Morning all,
I have been slowly replacing all the subfloor in the bathroom due to various leaks, so I wanted to start from scratch. I have reinstalled the bathroom cabinet and sink and purchased an adjustable trap, which has gone on fine. I have also put in place the waste pipe, which is the 40mm floplast solvent weld pipe type (with a 90-degree elbow on) to connect to the waste trap.

I am struggling to figure out what I need to connect between the waste trap and the floplast elbow (may not actually need the elbow) I have attached some photos to show what I have.

First photo - shows the rough general setup
Second photo - the type of adjustable trap I have installed
Third photo - the outlet of the waste trap that I am struggling to connect into and it have 3 pieces of plastic sticking out (internal) which I'm not sure what they are for and makes connecting the adjustable flexible waste pipe seem tricky and not secure.
Fourth photo - show the waste pipe with 90deg elbow
Fifth photo - just confirming size of the elbow on the waste pipe
Sixth photo - just confirming the type of adjustable waste pipe which is what I thought I needed to connect the waste pipe and floplast pipe to each other but it doesn't work.

Any help would be greatly appreciated, thank you,

Regards,
Chris

 

[CountryFan]

You'll need a piece of wastepipe and a reducer as you've used 42mm solvent weld trying to go to 1.25" trap.

 

[ChrissyPy]

Thank you for the response, so i'm a complete novice with the terminology.

So I need a 42mm to 1.25" reducer?

 

[CountryFan]

Sort of. It's me trying not to complicate matters, but failed. If you're keeping it solvent weld, then yes you need a reducer but the pipe and reducer you would need will be:

42mm x 36mm reducer (or whatever floplast pipe size is)
36mm pipe to fit the 1.25" trap - it's inch and a quarter as it's universal to take push fit or solvent weld, rare cases copper waste pipe.

 

[ChrissyPy]

I think I would be better swapping the trap for a proper floplast trap which is the correct size to connect into my floplast waste pipe. I believe this is the correct one?

 

[CountryFan]

I think I would be better swapping the trap for a proper floplast trap which is the correct size to connect into my floplast waste pipe. I believe this is the correct one?

Then you would also need to upgrade the waste in the basin. Standard basin waste sizes are 1.25".

 

[ChrissyPy]

Oh god,
So I bought the reducer as mentioned above but it isn't quite small enough to fit into the waste trap outlet, and the screw fitting for the trap doesn't fit over the reducer.

And my waste pipe is to big for the other end of the reducer.

 

[CountryFan]

Oh god,
So I bought the reducer as mentioned above but it isn't quite small enough to fit into the waste trap outlet, and the screw fitting for the trap doesn't fit over the reducer.

And my waste pipe is to big for the other end of the reducer.

So you've bought a push fit reducer, yours needs to be solvent weld as you appear to have solvent weld pipe. That reducer would fit a push fit 41mm fitting and where the rubber seal is takes the push fit pipe - 34mm.

 

[ChrissyPy]

Ok so I need
40 to 32mm floplast solvent weld reducer,
Length of 32mm floplast solvent weld pipe,

Any issues with the connection of the 32mm floplast solvent weld pipe going into the outlet of the waste trap?

 

[CountryFan]

Ok so I need
40 to 32mm floplast solvent weld reducer,
Length of 32mm floplast solvent weld pipe,

Yes, assuming floplast is 32mm, could be labelled as 36mm.

Any issues with the connection of the 32mm floplast solvent weld pipe going into the outlet of the waste trap?

No, there shouldn't be

 

[ChrissyPy]

Should be these two items?

 

[CountryFan]

Should be these two items?

Should be yes. Just check the pipe fits the reducer before leaving

 

[ChrissyPy]

Getting soooooo pi$$ed off with this now,

Bought the reducer and a 36mm piece of pipe. So the 36mm pipe fits in the waste, my reducer fits on the end of that but my 'actual' waste is 43mm which is the same size as the reducer and I can't seem to find a reducer from 36mm to 43mm. Unless the reducer needs to be more like 47mm

 

[ChrissyPy]

And I don't know why I'm even saying 36, it's 32 ffs

 

[ChrissyPy]

Ok so I've sorted it, the reducer needed to go into a coupler. So that end is all sorted, I'm now looking at connecting into the existing bit of pipework that connects into the main soil stack.

However, my 43mm waste pipe seems ever so slightly to big for the existing grey coupling?

Any ideas?