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 Details ... is small.6)No vibration, and no noise.7Each valve is pressure tested at the end after the factory, ... pool, wastewater treatment, agriculture irrigation, industrial applications, etc pvc check ball valve