The McAlpine mechanical soil pipe boss is an excellent solution for adding a waste connection to an existing soil stack. Its design simplifies a job that would otherwise require messy strap-on bosses. The provided fixing tool ensures a perfect, watertight seal without the need for additional adhesives. Just a good 57mm hole saw / tank cutter.
It's a straightforward product that delivers on its promise of a quick and reliable connection. The universal design accommodates both push-fit and solvent weld 40mm / 1.5” waste pipes, offering great versatility. Proper installation according to the instructions (which I forgot to read)—and avoiding over-tightening—seems to be key to a successful fit (I may have over tightened but I think I got away with it). Overall, this is a quality, time-saving product that any DIYer or professional plumber will appreciate for its ease of use and effective performance.
Dead easy to fit, just drill the right size hole, fit in the right way up & turn the key anticlockwise for a strong sturdy fit.
Easy to fit and seals well Fitted a few of these in cast and plastic
This saved the day, the cheaper boss was leaking, well worth the extra expense
Would defo be using one of these again. Actually a slight smaller than in looks on the image which was better for the limited space I had on the job. A bit pricey but you get what you pay for and it does what its intended to do.
Great product and neater than strap on boss. Worth the extra expense.
Once I understood the simple instructions, this connector was very easy to use. Drilled the hole to the correct size with a good quality bit, inserted the connector, three twists and its done. I did add some sanitary sealant for good measure, just to be on the safe side. Really easy joint, highly recommended, took me all of 5 minutes to fit.
What a product. A job well done because of this. Fixed and sealed well. I used a 54mm holesaw and filed the remainder out so I was a snug fit.
Great piece of kit. Looks smart and saves time. Usual McAlpine build quality.
I found it difficult to achieve a tight fit onto the soil pipe - any movement on the attached waste pipe would easily dislodge the boss.
Got it to work in the end with some modifications. Had to trim the square plate a little, and had to goturn the big rubber piece around as it was assembled the wrong way at the factory. Then with it tightened, it still felt like it could pop out of the pipe so I put some stixall around the edge of the square plate. Now there are no leaks which is great, but it's not as good as the videos on YT! Nice that it is demountable. I put a compression coupler further up the pipe as well in case I need to dismount at any point.
Much better than a strap on boss fits rwaly easily with the tool supplied with it, then you have a compression fitting rather thsn a bung that will deteriorate over time causing leaks
This item is difficult to fit, it leaked and I had to make adjustments to rectify this!
This fitting is so handy when you can’t fit a boss fitting or a strap on boss. It is fitted in minutes.
This is so easy to install it literally took me less than 1 minute after cutting the 57mm hole in the soil pipe.
Bought this to replace an older model, same product and make. Easy to set up and so far no issues.
Super easy to fit, just used 57mm hole cutter on plastic soil pipe, insert the boss, turn the supplied tool and job done. Compression fitting onto the 40mm waste pipe and water tight. Just remember to get the right size holecutter.
This is easy to use and looks very secure - just make sure you turn the lock key the right way or the thing might come apart. Easy to install.
Nice and simple to fit but you need a 57mm hole cutter which is not supplied this is the only downside
Really great device and easy to use. Tool station were really great in helping me find the right product for the job.
