1)Name:pneumatic ball valve 2)Materials:PVC-U,CPVC,PP,PP-H,PVDF 3)Certificate:CE, ISO9001:2008 4)Standard:DIN,ANSI, ... CNS,JIS 1) Name: pneumatic ball valve2) Materials: PVC-U,PVC-C,PP,PP-H,PVDF3) High quality,Clear, light weight ... ) Pre-load spring sets make maintenance safe and easy7) It is widely used in chemistry, electron, metallurgy, plastic, electroplate, irrigation, treatment ...