Can anyone confirm this is wrong?

noobdiyer · 21 May 2012

Hi all,

We had some work done, and I get the feeling the guy who did it didn't really know what he was doing. Being a noob, I need to confirm my noob logic.

In the attached image:

A - waste
B - from the sink
C - Fork plastic bit
D - waste pipe for dishwasher

//media.diynot.com/167000_166777_46296_32899282_thumb.jpg

D is lower than A, so logically, all our waste from B is in theory flowing to D, which can't be right?!?

As a solution, I'm wondering if I can just:

- Remove "D"
- Cap off the right hand side of C with a plastic screw cover thingy.
- Replace "B" with something of the same length, but with a entry point for the dishwasher (sort of like a T junction).

The thing which I don't quite get is that the top of "A" has a rubber seal and small lip (about 3mm) which fits into the grey sink waste thing above it. Does this mean the T junction part is not a normal one, or do I need to ask for something special/specific? Also, are sizes/lengths standardised, or should I take the existing part with me for reference?

I could replace "C" but not sure what the point is if I can just seal off the right hand side with a screw on cover.

All suggestions appreciated!

Thanks!!!

Untitled

noobdiyer
21 May 2012
1

doitall · 21 May 2012

Your noob logic is spot on, get the guy/gal back to do it properly.

noobdiyer · 21 May 2012

Awesome... I can feel the noob overconfidence building

To be honest, it's going to be so much bother getting him back in, I'd rather just fix it myself.

If I take the whole of A,B,C, and D with me to a plumb center or similar tomorrow, hopefully they can sort me out!

Thanks!

TicklyT · 21 May 2012

Routing the dishwasher waste pipe as high as possible, tight to the underside of the worktop will help prevent any backflow towards the dishwasher. A clip around the D/W pipe to stop it blowing off the spigot would be a good idea too. The hose may seem tight when it's cold, but once the D/W starts pumping hot water through it....

The union with the sink waste is normal for a sink trap. The joint below it is likely to be a telescopic section with a compression fitting to nip it up.

A trap like

would be the more usual fitting. It would save a bit of space in the cupboard under the sink too. Normally, the hose adaptor would be swivelled around to point upwards on installation to route the hose as above.
A pound to a pinch of the proverbial says the trap outlet would be at a different height, so the grey solvent weld pipe would need modifying to change the trap though.

doitall · 21 May 2012

But the spigot looking up.

Hugh Jaleak · 21 May 2012

May get away with just turning the whole thing round 180degrees so D is at A and vice versa. Looks to me like it is swept in direction of flow so is actually fitted the wrong way round.... Could need to trim a fraction off the bottom of the telescopic section (B going into C) to allow for the height difference.

seco services · 21 May 2012

Just turn the trap around, don't need to buy no new trap.

noobdiyer · 21 May 2012

Ah... this was what I was worried about - not too keen on altering the grey solvent weld pipe. Hmm... may have to try and get someone to get this done after all.

noobdiyer · 21 May 2012

Hugh puts forward a good idea, and I think it could work. Will do some reading on how this could be achieved as I've never trimmed down this kind of pipework before - if it's literally just cutting it, then it could work!

seco services · 21 May 2012

noobdiyer said:
if it's literally just cutting it, then it could work!

Yes thats why its an adjustable trap.
Check first it will probably slide in more anyway.

DP · 22 May 2012

B slides in C.

Remove the trap and hose at D.

Trim B so that D now line up with grey pipe, Fit hose to A.

Secure all unions

Route the dishwasher hose so that it goes up and then comes down to connect to the trap.

Good trap, no need to get another

mysteryman · 22 May 2012

Just to confirm the above. The dishwasher waste is connected to what should be the outlet, and the outlet is where the dishwasher waste should be. You've got a telescopic inlet from the sink, so turn it round, adjust the telescopic part to suit, and take the dishwasher waste tight up under the sink before dropping to the nipple. This will prevent back-siphonage.

Agile · 22 May 2012

As Hugh says just reverse A and D and hook up the hose.

I am sorry that he did not do it correctly. There is often a lack of skills in the plumbing business.

But I put some of the blame on customers who choose whom to employ based on rock bottom prices!

Stokeplumbingandtiling · 22 May 2012

Hugh Jaleak said:
May get away with just turning the whole thing round 180degrees so D is at A and vice versa. Looks to me like it is swept in direction of flow so is actually fitted the wrong way round.... Could need to trim a fraction off the bottom of the telescopic section (B going into C) to allow for the height difference.

seem like you have your answer........but you are not getting the person who did it back. You could at least let them know that you aint too pleased......they may even learn something from their mistake

noobdiyer · 22 May 2012

Problem fixed - all works perfectly now, and have learned something to boot. Win-win!!!

Never thought about the consequences of not informing the guys who did the job - I'll email them a picture for sure - I wouldn't want them doing that to another customer!!!!

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Can anyone confirm this is wrong?

mysteryman

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