... 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 ... U-PVC, C-PVC, PP-R, PE, PE-RT, POM and other material.3. We can provide moulds various pipe ... U-PVC, C-PVC, PP-R, PE, PE-RT, POM and other material. Form as thread, socket, male, female, ...