1.material:pvc ball lvalve 2.Size:1/2''--4'' 3.Standard: ... Jiangsu, Chian(Mainland) Standard: ANSI, BS, DIN, JISMaterial: Pvc Size: 1/2"-4" Type: Socket and threadPacking & DeliveryPacking ... at the end after the factory, Lowest leakage rate.8)Quality: Heat, high temperature, extremely long usage life ... , wastewater treatment, agriculture irrigation, industrial applications, etc pvc check ball valve