Stainless Steel Check Valve

Check valves supplier in China offers stainless steel check valves. 
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.
Face to Face and End to End: ASME B16.10, MSS SP-71 DIN 3202 F1, BS 4090, BS 5153.
Pressure-temperature ratings: ASME B16.34.
Wall Thickness Dimension: API 600, BS 1868.