... produce mould 2.describe:union ball valve 3.type:single,double,thread,butterfly,brass ball 4.material: ppr, pvc,abs,pp We are ... of single/double Union valves, check valves, membrane valves, bottom valves, gate valves, locking valves, deflation valves, IBC valve, three way valve, water tapes ... and sewerage pipe fitting moulds, etc. made of ABS, U-PVC, C-PVC, PP-R, PE, PE-RT, POM and other material ...