pipe connection

snipped-for-privacy@btinternet.com wibbled on Wednesday 30 December 2009 10:55

If the "flanges" (usually called bosses) look like the ones on the side of this:

I would start with the rubber ones from Screwfix - you can get a refund if you keep it clean, and it doesn't work.

Both, AFAIK will take push fit and solvent weld pipe quite happily (slight size difference between the two pipes).

I assume you are OK with the rest of the pipework and U-trap? If not, please say :)

BTW, I'd got with 40mm pipe for this job.

Cheers

Tim

If you have a separate drain for grey water, the water company might expect you to use that instead of the main soil pipe. Applies in my street I think.

Washing machine waste is grey as is the waste from your bog going down the main soil pipe, they should go together and off to the treatment plant.

What is sometimes kept seperate is water from your roof and hard standings that may go to a soak away or into storm drains. Storm drains may well just flow directly into local water courses without any treatment. Stick washing machine waste down that and the EA will come looking for you with a large clean up bill...

The latter counts as black. However I agree with the destination.

Andy

Stuart Noble wibbled on Wednesday 30 December 2009 11:39

Did you mean "rainwater" not "greywater"?

To be fair, even if the waterco accept grey down the rain drain, it's not very practical for the OP to go digging up the garden to get to the right pipe :)

Ah. I was under the impression grey water didn't end up in the main sewer, but then where else would it go?

I've always referred to it as brown.

To connect to the Boss, the OP will also need a hole saw and attachment to remove the plug cleanly and neatly from the branch. Ensure there are no burrs which could cause things to snag and then block the main branch.

I would say its worth measuring the diameter accurately and then going to a specialist drainage merchant(bss or drain center) to get the correct adaptor. The solvent weld adaptors are preferable to use over the rubber versions, but you will need to buy a pot of solvent glue.

Dave.

Dave Starling wibbled on Wednesday 30 December 2009 16:05

Good point about the holesaw. The Bosch quick-change ones work very nicely on those sorts of bosses.

WRT to the rubber, it isn't always possible to get a solvent weld that will fit - I made that mistake once mixing Marley and Floplast parts. Marley do the solvent weld adaptor, but it is still a push fit rubber joint for the waste pipe. There might be solvent-solvent adaptors, but I must admit I've not actually come across them.

However, the rubber Floplast thingies are pretty firm. You can improve matters by using some Fernox LS-X (silicone) on the rubber-110 joint. It's absolutely not necessary to use anything other than silicone oil/washing up liquid/silicone grease on the waste pipe to rubber joint if the pipe is clipped - there's a good deal of holding power and it's not going to fall out. No harm though to add LS-X on both sides, apart from it will be very difficult to ever disassemble the joint if required.

Cheers

Tim

Never heard that term.

Andy