21.5mm - Overflow Pipe

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21.5mm - Overflow Pipe A 21.5mm solvent weld overflow system in white PVC-U. No expansion gap required on the solvent weld overflow system. Apply solvent cement evenly to both surf aces of joint, insert pipe fully in the socket depth and remove surplus cement with a cloth. Allow five minutes to set before handling and twelve hours before testing the system. Ensure that the pipe is cut square, all swarf removed and cleaning fluid applied to both surfaces of joint. Show more