china valve manufacturer big sale pvc plastic ball check valve wafer check valve swing check valve back preventer

Short Description:

PVC Swing Non Return Check Valve Backflow Preventer Size: 3/4″ DN20 to 6″ DN15 Color: Grey or White Connection: Socket or Female Thread Standard: DIN, BS, JIS, ANSI, NPT or BSP PVC Double Union Ball Check Valve  Size: 1/2″ DN15 to 4″ DN100 Connection: Socket or Thread Standard: JIS, BS, ANSI, DIN PVC Wafer Check Valve without Spring Size: 2″ 63mm to 8″ 225mm Connection:  Wafer with Flanges with Screws and Nuts