Universal waste fitting also known as compression waste fittings are available in 32mm and 40mm
Plastic compression wastes are not used a great deal by plumbers who prefer to use solvent weld waste systems. However the waste pipes used for push fit fittings and solvent weld fittings are two entirely different sizes and one of the easiest ways to join the two is by using compression fittings.
The other really invaluable use for plastic compression plumbing fittings is when you are refurbishing and trying to join old pipes to new pipes including old lead wastes (which should be replaced if you get the chance) and odd sized imperial waste plumbing pipework.
Compression fittings are big and bulky but they are very easy to use and can get you out of some tight spots sometimes The most common universal fittings are straight socket, elbow, tee reducer and adjustable bend.