size: 1/2''-4'' structure:ball standard:JIS,DIN, BS, ... Mainland) Standard: ANSI, BS, DIN, JISMaterial: Pvc Size: 1/2"-4" Type: Socket and threadPacking & DeliveryPacking Details: colorful box, ... small.6)No vibration, and no noise.7Each valve is pressure tested at the end after the factory ... wastewater treatment, agriculture irrigation, industrial applications, etc 1/2-4 blue socket plastic ball valve