John Guest MW01154N - 15 mm 1/2" BSPT Male Thread

John Guest MW01154N is a type of fitting manufactured by John Guest, a company that specializes in plastic push-fit fittings for plumbing and heating systems. The MW01154N fitting has a 15mm outer diameter and a 1/2" BSPT (British Standard Pipe Taper) male thread.

The fitting is designed to connect to a pipe or tube with a 15mm outer diameter, and has a male thread that can be screwed into a female threaded connection. The BSPT thread type is commonly used in the UK and other countries, and has a tapered thread that creates a seal when tightened.

Overall, the John Guest MW01154N fitting is a reliable and convenient option for connecting pipes and tubes in plumbing and heating systems.