How do you install PVC repair coupling?

How do you install PVC repair coupling? Do PVC repair couplings work? Using PVC Pipe Repair Couplings Should you sand PVC before gluing? In know that PVC should be chamfered and even lightly sanded before gluing for better insertion on the fitting (and probably some other reason). What about CPVC, a manual told me to … Continue reading How do you install PVC repair coupling?