Under Sink Plumbing All OK?

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asianhawk

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Hi, I had my new sink plumbed about a year ago, and it's all been fine, but then it started to stink every time i emptied the sink. I have been under the sink and cleaned all the pipes out (they were all ladden with green scum), but am concerned about how my pipes have been put in. I've seen ideal diagrams, just wanted your views (see image attached).

There is a main sink to the left and a small one to the right. The only prerequisite was that there was a junction to attach a washing machine if i installed one later (which would be fruther to the right). The dark grey corners are glued and there is ever such a slight incline from the u-bend along the pipe with the writing on it.

ps. having put it all back together, i've now got a little leak at the mid section of the horizontal pipe at the back - i guess i need some threading cement? to fix that, and the right sink has always drained away, when the plug is in (around the outer rim of the plug area - which i guess needs some plumbers putty? around it)

thanks for your opinions.
 

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hj

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drain

There is nothing wrong with that system that could not be cured by taking the whole thing out and throwing it in the garbage can. Then put in a proper drainage system.
1. It is a illegal "S" trap drain
2. Good luck with the flooding if you EVER connect a washing machine to that drain.
3. The "front" drain pipe is HIGHER than the rear one.
4. Even a handyman could install a drain better than that one.
 

Jimbo

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You could not configure a washing machine standpipe under there and comply with code.
NO to your question on the drain plug.
There is no fitting in your picture which would use thread tape or joint compound.

Start by putting the trap right at the stub out from the wall. Then configure a contiunous waste, center outlet or end outlet, to join drain from the two sinks and discharge them to the trap/
 

Nukeman

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Just to be clear, I think he means washing machine = dishwasher (not clothes washer).

Edit: This is just a guess. However, I guess he could mean either as it is pretty common to put a clothes washer in a kitchen in Europe.
 
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asianhawk

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Under Sink Plumbing Ok?

thanks for the replies. Confirmed what i thought. ps. Yes, you're right, i was querying about adding a 'dishwasher', not a washing machine.

I'm going to have a go a doing it from scratch like the diagram attached. Just a couple of questions:

1) the long pipe shown between the two sinks (1) is constructed angled. Does it have a specific name?

2) for putting a connection for a dishwasher, would it be best to put a Y junction at point 3 on the diagram, just use the stopper connection that is already there and unused (point 2 on the diagram), or change the corner somehow (between points 1 and 2 on the diagram) to incorporate a connection there.

thanks
 

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Nukeman

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The connections are usually something like this:

sink_dw.jpg


At least in the US, if you didn't have a disposer there, you would install a tailpiece (part that extends down from the sink drain) that has a dishwasher connector (basically a nipple in the side for the dishwasher hose).
 

asianhawk

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Under Sink Plumbing Ok?

Everything sorted (see attached).

The junction on the Y junction can take the nipple for the dishwasher (if ever needed).

thanks for confirmatory assistance.

ps. the original section was done by assistants of my kitchen fitters (handymen i guess) who said it would be no problem (which i assumed it wouldn't be). Won't be so trusting next time.
 

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Gardner

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Much better. This arrangement will serve you well.
Were you able to re-use all the old fittings? It looks like you might have even had a few spares.
 

asianhawk

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undersink plumbing

Much better. This arrangement will serve you well.
Were you able to re-use all the old fittings? It looks like you might have even had a few spares.

most of it. I invested in a few extra extension bits (cos i was fussy about getting the heights right), but all done for under a tenner so i'm pretty happy (not to mention the satisfaction of doing it one'self). And i put some silicone around the sink plug so that doesn't leak any more either. :)
 
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