Boss Adapter Connecting Up To 32mm ABS Waste Wipe

danielson · Jan 16, 2021

I have a boss adapter to connect to my basin waste to soil branch but the I am trying to work out what connector I need on the boss itself to connect up my 32mm solvent weld waste pipes.

I currently have a solvent weld adapter in the first picture below and my ABS 32mm waste fits in there to solvent weld. The problem is the adapter is PVC and read you cant solvent weld ABS to PVC. I then found the following adapter which would work as it doesn't require solvent welding the waste onto it however how would I then convert to a solvent weld pipework further up - do I need a coupler of some sort? I don't want to use push fit pipework as it will be behind tiles so working out a way of changing from push fit (at the boss connector) to solvent weld later on...

Adapter For Boss

ShaunCorbs · Jan 18, 2021

Ric2013 said:
Does that mean you have solvent welded ABS to PVC at some point along the run (unless you run all your pipework in M-PVC)?

tbh it’s a possibility as I don’t look at what city’s give me in regards to boss and adapter

Ric2013 · Jan 18, 2021

ShaunCorbs said:
tbh it’s a possibility as I don’t look at what city’s give me in regards to boss and adapter

Then it seems to be that while solvent welding ABS to PVC may be 'wrong', it seems to work 🙂

danielson · Jan 18, 2021

Ric2013 said:
Then it seems to be that while solvent welding ABS to PVC may be 'wrong', it seems to work 🙂

I went to city and they gave me the boss and adapter but went back today to get the push fit equivalent adapter to see what that is like. I had a go on some scrap 4 inch on drilling the hole for the boss adapter as I had a spare 57mm hole cutter in the garage but I think may actually be a 55mm hole required for the hole itself. I have a picture of the hole below not sure if I am going to benefit much by drilling a smaller hole as I would hope the solvent cement (gap filler is on order today GFC100) would do the job....

Its interesting to know what you do in the trade regarding the PVC to ABS solvent weld and seems like many do it that way with no issues. If there were big issues with it I would imagine it would be strictly not advised as a disclaimer on instructions for items. Now for me to decide weather I use the push fit one in the picture below or the solvent adapter I have.

I haven't bothered deburring this hole I cut as it was just to see the fitment.

WC1 · Jan 18, 2021

If the op tries a mech boss next time - no glue needed !
👍

https://www.NoLinkingToThis/p/mcalp...Np9X0DD44RjMyiKDktBoCTskQAvD_BwE&gclsrc=aw.ds

danielson · Jan 18, 2021

WC1 said:
If the op tries a mech boss next time - no glue needed !
👍

https://www.NoLinkingToThis/p/mcalp...Np9X0DD44RjMyiKDktBoCTskQAvD_BwE&gclsrc=aw.ds

To be honest by the time I faff around finding a smaller hole saw I may as well buy the McAlpine one and send the solvent cement back.

I really like the idea of being able to compress both either ABS or PVC pipe to the connector on the boss so you can then solder further along he connection.