... more than 15 years experience about making double ball valve moulds.union ball valve has seven parts.We can make all ... kinds of ball valve mould customer's require. The quotation can be ... , three way valve, water tapes, etc., made of ABS, U-PVC, C-PVC, PP-R, PE, PE-RT, POM ... supply and sewerage pipe fitting moulds, etc. made of ABS, U-PVC, C-PVC, PP-R, PE, PE-RT, POM ...