There are two different waste systems, push fit and solvent weld which although both sold as 40mm are slightly different sizes as determined by the British Standards. 40mm push fit is actually 41mm and 40mm solvent is actually 43mm. If the pipe that you have has WS02 or ABS printed on it then this will be for the solvent system. You will need a pipe marked with WP02 or PP.
Answered by: FloPlast Ltd Tech Team
Date published: 2020-09-18