McAlpine started making plumbing products in 1902 and later were the first company in the UK to manufacturer plastic fittings so its fair to say they know how to make a decent fitting or two. Now a days they make everything from traps to toilet pan connectors.
Today we’re talking about waste traps and fittings, now McAlpine fittings use what’s called a compression coupling, what this is is a rubber washer that is slid on to the end of the pipe and then is crushed by the nut when you put in to the fitting to create a firm seal. McAlpine have their own guide which you can find here
With traps there are 3 main sizes: 32mm, 40mm and 50mm
- 32mm or 1.25 inch is designed for basins and bidets
- 40mm or 1.5 inch is designed for kitchen sinks and baths
- 50mm or 2 inch is designed for commercial kitchen sinks
We are a large stockist of McAlpine and we have just added them to our online shop (we do sell to the public as well!) You can find our full range right here