How Do I Plumb This Sink In? [Pic]

[ILikeDIYS]

No idea which fittings to use to link up this 1.5 bowl sink waste?

I got a bunch of parts from Bunnings but none seem to link all 3.

I mean I can visualize it in my head (half bowl waste linked to T-section right before full bowl waste with the tail of the T leading to the overflow (the black tube between the 2 bowls you can barely see in pic 1)) but I don't know what to buy to make this happen?

1st time doing this by the way, any help appreciated.

Thanks.

 

[Dan Robinson]

You've got the wrong trap. And that outlet pipe (the grey one) is too high/running uphill.

 

[ub7rm]

You need one of these, Mcalpine 1.5 bowl kit:

https://www.screwfix.com/p/mcalpine-double-1-bowl-sink-kit-white-40mm/71787

Other suppliers are available...

Presume your new sink has a deeper bowl than the old one? You will need to find a way to let the water run in its natural direction.

 

[gasbanni]

You've got your answer ! Take off that p trap you don't need it. The mcalpine kit is right you'll have to hacksaw some on the fittings/pipes down to make them shorter to fit the sink and in addition you'll need a length of 40mm pipe and two mcalpine elbows.
That's it. Hand tighten the two tails to the sink outlet theyre obviously in a fixed position, you probably have to shorten horizontal pipe that joins the to outlets together.

The two elbows and pipe get you from the bottom fitting to the existing grey waste pipe.

https://www.screwfix.com/p/mcalpine-mt4-bend-90-40mm/45446?_requestid=435167

 

[ILikeDIYS]

I still don't get it

I need this:

That Mcalpine kit linked above is this:

Mcalpine kit is unnecessarily long (even cut down), and will need the shelve below cut out (which is already in its lowest position).

The new sink is only about half an inch lower than the old one - which was just single bowl stainless steel.

 

[Dan Robinson]

You need one of these, Mcalpine 1.5 bowl kit:

https://www.screwfix.com/p/mcalpine-double-1-bowl-sink-kit-white-40mm/71787

I still don't get it

What don't you get?

Mcalpine kit is unnecessarily long (even cut down), and will need the shelve below cut out

No it isn't, and that's the way it is.

 

[ILikeDIYS]

OK where can I get a P trap that allows a pipe to be connected to its side WITHOUT having an additional junction piece between the P trap and sink strainer?

So I can do this configuration:

 

[ILikeDIYS]

This is the problem with the Mcalpine kit:

If the P trap is flipped the other way it is way too low but if it is flipped upside down like in the picture it goes higher than the grey outlet and this part can't be cut down.

 

[Madrab]

Have you tried fitting the P trap side of the kit onto the 1/2 bowl waste and not the main bowl?

 

[ILikeDIYS]

Have you tried fitting the P trap side of the kit onto the 1/2 bowl waste and not the main bowl?

Potentially genius idea will have a look now

 

[ILikeDIYS]

Seems to be a lot better fit than the other way round but the 90 deg bend is a bit high for the grey outlet

Anyone know of any "low profile" 90 deg bend fittings than won't contribute to length as much?

 

[Hugh Jaleak]

You're going to need 2 45° bends to 'dogleg' the existing waste into the right position for the new outlet. Get the McAlpine kit fitted and then adjust the pipework through the wall to suit. You'll probably have to cut that existing bend off, but cut it as tight to the bend as you can, leaving the maximum amount of pipe to play with. Easier to cut a tad off then add a bit on.

 

[Madrab]

You won't get away without doing some alteration work to the waste pipe itself but at least now you can adjust it so it is all running downhill.

Cut the gray waste pipe behind the 45Deg fitting, use a new 45 deg onto the tail of the grey waste pipe thats left, pointing it up and then add a new small piece of waste pipe to bring it up to the level of the trap, another 45deg waste to level it and then a small stub into the trap, job done.

 

[aptsys]

You've got the bend upside down. All those pipes will fill with crap

 

[gasbanni]

Take the sodding shelf out ......fit the mcalpine waste kit, use the two elbows as I've already suggested, need a bit of 40mm waste pipe.

Adapt the bottom shelf as necessary when the waste is fitted youre making this hard! !!!