Specifications: Nominal diameter: 1/2 Inch-48 Inch (DN15-DN1200). Pressure range: Class 150-2500 LB (PN16-PN420). Body Materials: Carbon Steel, Stainless Steel, Alloy Steel, Duplex Steel. Trim (Disc, Stem): Carbon Steel, Stainless Steel, Duplex Steel, Alloy Steel. End Connection: RF, RTJ, BW. Working temperature: -196℃ - +560℃. Suitable Medium: Water, Steam, Oil and natural gas, etc. (Different raw material for different medium) Cryogenic, soft seat insert design is available for tight shut off where required. Design and Manufacture: BS 1868, ASME B16.34, API 6D. Inspection and Test: API 598, API 600 or API 6D, DIN 3230. End Flange Dimension: DIN 2543-2545, DIN 2501, ASME B16.5 (for NPS≤24, ASME B16.47 series B, API 605, ASME B16.47 A Series, MSS SP-44 (for NPS>24). BW end Dimension: ASME B16.25. https://www.uvalve.cn