Connecting flexible waste to basin

zzyxxx

Trying to connect a 1.25" threaded nut on the flexible waste pipe to the sink drain and it's leaking.
Trouble is the nut on the end of the flexible pipe has movement in it, presumably to allow the nut to turn onto whatever.
Am I missing a piece here?

As you can see when it's connected it's leaking, if tighten it less to hand tight or get the wrench at it, same story.
All pieces are brand new.

Any ideas?

Can see daylight in the nut beside the green washer:


The green washer meets the threaded sink drain almost perfectly, if I tighten too tight it feels like the flexible tube part is going up into the drain:


Drop of water, this is when it's fairly tight (didn't want to over do it, but it's more than hand tight)


Thanks for any help

rightjob!

zzyxxx wrote: »

Trying to connect a 1.25" threaded nut on the flexible waste pipe to the sink drain and it's leaking.
Trouble is the nut on the end of the flexible pipe has movement in it, presumably to allow the nut to turn onto whatever.
Am I missing a piece here?

As you can see when it's connected it's leaking, if tighten it less to hand tight or get the wrench at it, same story.
All pieces are brand new.

Any ideas?

Can see daylight in the nut beside the green washer:


The green washer meets the threaded sink drain almost perfectly, if I tighten too tight it feels like the flexible tube part is going up into the drain:


Drop of water, this is when it's fairly tight (didn't want to over do it, but it's more than hand tight)


Thanks for any help

What is that waste going into,outside to a gully?
The flexible waste has a flat flange surface and the sink grating is curved,you would be better off putting a trap on the sink and hard piping it then in wavin.
Those flexible waste pipes are not great.

zzyxxx

rightjob! wrote: »

What is that waste going into,outside to a gully?
The flexible waste has a flat flange surface and the sink grating is curved,you would be better off putting a trap on the sink and hard piping it then in wavin.
Those flexible waste pipes are not great.

There's a white PVC pipe coming out of the wall and I have the flexible pipe attached to that. Pictures didn't show up, will try attach again...
I figure the Flexi pipe is easier as the drain is off centre to the waste pipe. With my limited knowledge I think this is easiest than multiple trips to woodies with trial and error approach

zzyxxx

rightjob! wrote: »

What is that waste going into,outside to a gully?
The flexible waste has a flat flange surface and the sink grating is curved,you would be better off putting a trap on the sink and hard piping it then in wavin.
Those flexible waste pipes are not great.

There's a white PVC waste pipe coming out of the wall. Since it's off centre to the sink I thought the flexible pipe would be best. I wouldnt be confident that I'd get it all to line up without it to be honest.
Will try attach pics again

zzyxxx

zzyxxx wrote: »

There's a white PVC waste pipe coming out of the wall. Since it's off centre to the sink I thought the flexible pipe would be best. I wouldnt be confident that I'd get it all to line up without it to be honest.
Will try attach pics again

Pics attached

monseiur

Not an ideal solution to your problem........but if all else fails, dry thoroughly, apply a good bed of good quality silicon mastic, hand tighten well or use a wrench gently, leave for a few hours before using to allow the mastic to cure, that should do it !
M.

whizbang

Remove all the PTFE Tape. Its not for this job.

freddyuk

Wrong fitting for the job. Don't tighten with a wrench!! Those ears give you sufficient leverage to tighten correctly so too much force distorts the joint and displaces the rubber gasket. Check the bottom of the sink waste and check it is smooth. The gasket has only a thin metal edge to seal onto. Gently screw the nut up hand tight only and then check for leaks. A quarter turn each time and check if leaks. If the gasket is already damaged you will need to replace.
Best option is proper sink trap and pipe across and down onto drain.

jhenno78

You need to get rid of that thing completely and start again.

The flexi itself is a cheap piece of crap and should never be used anywhere.
You have no p-trap!
Seeing as you haven't flagged this straight away, let's tell you...it's a big no-no.

So yeah, you need to plumb the whole thing again. It's not an specially hard job so there's no reason to cut corners by using a flexi- anything.

monseiur

jhenno78 wrote: »

You need to get rid of that thing completely and start again.

The flexi itself is a cheap piece of crap and should never be used anywhere.
You have no p-trap!
Seeing as you haven't flagged this straight away, let's tell you...it's a big no-no.

So yeah, you need to plumb the whole thing again. It's not an specially hard job so there's no reason to cut corners by using a flexi- anything.

I guess he could form a trap with the flexi pipe by going down straight first then up forming a U shape and then out to the gulley......not ideal but...
M.