Can someone tell me how this fitting works?

[djn1]

Hi,

I recently disconnected my waste pipe from my bathroom wash basin because it was blocked up. After cleaning it out, I can't figure out how the end that connects to the sink actually seals. I am sure that I am not missing any parts, but I have tried re-connecting the pipe and it leaks!

The end of the pipe that connects to the sink has a blue plastic tapered ring on it and it looks identical to the picture below:

http://img190.imageshack.us/img190/626/fittings.png

It connects to the sink by screwing onto the metal part of the plug that protrudes below the sink. It used to seal perfectly before I disconnected it, and it was me who originally fitted it, but I just can't figure out how it works now

Any help would be appreciated.

Cheers

 

[Charnwood]

Have you tried putting the blue washer on t'other way round?

That fitting does not look right to me for putting onto a basin waste.
It should have a shoulder and rubber washer.

 

[Hugh Jaleak]

I'd have said that was the bottom end of a telescopic trap section, should be the other end of that part that attaches to the waste. Blue ring provides the seal into the socket on the trap.

 

[djn1]

I think that this is the correct way that it goes on because that image that I have posted is from B&Q website and is for product :

FloPlast White 40mm Double Bowl Sink Kit 76mm Seal.

I have tried fitting the plastic washer (or whatever it is called) both ways around, and it leaked both times. I am fairly sure that it was this end that was connected to the sink (with the blue washer on). The other end of the pipe is just a series of compression connections that make up the trap and these use the rubber sealing washer that locates into the connecting pipe.

 

[Dan Robinson]

Unless the pipe in your picture goes INSIDE the basin waste fitting, it will never seal.

Can you post a picture of your actual waste and trap; offered together?

 

[djn1]

It's ok - problem solved!

When I took the pipes off, I didn't realise that my wife had already had all of the pipes apart, and she must have put the pipe that connects to the sink the wrong way around. The blue plastic washer is part of the telescopic section and it is a rubber seal on a flange that seals at the sink.

I have reconnected it the right way around and the pipes don't leak now

However, the sink is still blocked and we tried plunging it to unblock it, but it isn't clearing very well and it is also causing water to run through the kitchen ceiling below. It looks as if I will have to be getting floor boards up tomorrow

 

[Hugh Jaleak]

Thats what I was trying to say, it was the wrong way round! (Perhaps my explanation wasn't very clear!) Where does the waste pipe go to from the basin?

 

[djn1]

Yes, I understood your explanation, but because I thought that when I removed the pipe, it was the first time that this pipe from the sink was disconnected, I was convinced that the blue plastic washer must have sealed somehow (I don't do any plumbing jobs very often, so I am not that familiar with the various fittings.)

The waste pipe goes through the floor and is taken to the main waste outlet that runs down the corner of the house.

The sink is still blocked, but it does drain away slowly, and water doesn't come through the kitchen ceiling by doing this - it was only when I was using a plunger that it caused it to leak through the kitchen ceiling.

 

[Phill Peck]

Oh of course your "wife" took it apart first and put it back together wrong

 

[djn1]

Oh of course your "wife" took it apart first and put it back together wrong

Yes, I know that it sounds like a good excuse, but it is actually what happened!

She was quite amused when I read out your comment to her though.