SIZE OF PVC FITTING : 15MM ( 1/2" ) , 20MM ( 3/4" ) , 25MM ( 1" ) , 32MM ( 1-1/4" ) , 40MM ( 1-1/2" ) , 50MM ( 2" ) these fittings are used for solvent cement jointing to PVC pressure pipes. PVC pressure piping system is suitable for cold water service such as water reticulation and irrigation system.