How to install a mechanical boss | cast iron pipe boss

A mechanical boss can be used to connect a waste pipe, either 32mm or 40mm into a soil stack. Mechanical boss’s have the advantage that you can use them on cast iron or plastic soil pipes. There are a few different sizes available so please ensure you get the correct one.

[andrewchesney]

I just love your videos and instructions, as a DIYer they are GREAT - thank you so much for taking the time to make and share your knowledge. ANDREW

[ultimatehandyman]

I hope everyone has a great Sunday 😉

[limowhyte]

Hello, do you have a boss for a 2 1/2" cast iron vent pipe?

[lazylad]

Thanks for making video. Should you put some sealant around the collar or will it be fine without it.👍👍👍👍👍

[MrStebe]

Wouldn't these need to be a "wye" shape?

[cccfreedom]

Should show how to drill.hole in soil stack without dropping debris inside pipe

[terencejay]

McAlpine now do these for a 50mm/2" pipe into a 110mm standard soil pipe. (BOSSCONN110Z-BL in Black or BOSSCONN110Z-GR for Grey)

[honestwinch]

Would these work on an internal pitch fibre soil stack?

[nw]

Ah Apologies I have just found the other video, I can't understsnd why you you would not put this whole subject into one video.

[micky]

Wow I’ve done plenty of cast in my plumbing life timesaver and ensign but I’ve never seen this type of boss before
Thank you for you great clear and extremely helpful videos.
One question does the specialist tool come with the boss or do you have to purchase it separately
Regards Micky

[rickycwakingthemasses]

It will leak mine did and come detached from the soil stack
Useless product avoid !!

[Wildviking]

I know it's an older video..but is it a 57mm hole for both 32mm and 40mm pipe ?

[linniefriedlander]

Awesome knowledge and narration, i could watch this guy all day and not tire of learning - and i would be confident that he presented it all completely and in the perfect order for one to learn and execute whatever he is demonstrating... Jett Enterprises/Cleveland, Ohio

[cherylletourneau]

Where can someone get this product? I live in Canada

[Audiotorium]

I need to fit one to my soil pipe for water discharge from tank but the toilet waste is above, so this attachment would be approx 1 meter below … will toilet waste collect over time or am I over thinking?

[roman]

Got to do the same job. Thanks for clear and understandable explanation.

[linniefriedlander]

However, as a general rule, i always apply a sealant to every connection in plumbing, as well (usually 100% silicone bath caulk) to ensure long life and a semi-flexible connection, in case it gets bumped or moved for any reason...

[jlee]

Can this be used on a vent stack pipe?

[TPR]

Hi, great video. I have installed one of these but a 40mm pipe will not fit, the internal diameter of the boss is 38mm so the pipe is too big. Am I misunderstanding something?

[dalt]

Extremely grateful for this video. Had an ongoing issue with a shower that won’t drain. Pvc ran onto old lead that went through concrete floor to flat below (no access). Many questions asked about why the lead hadn’t been ripped out and why I can’t gain access, but thankfully with this I’ve got straight into the soil stack. Put a none return valve on the run at the off chance the water is pulled out the traps too as a failsafe incase of smells or gases. Thanks very much!