High-Temperature Nickel Alloy Check Valves

Description    

To meet stringent requirements for sealing, reliability, and safety, the valve body is manufactured using integral forging or forging with welding from nickel-based alloy. The sealing surfaces are hard-faced with cobalt-based alloy (e.g., Stellite) to enhance wear resistance and anti-galling properties, significantly extending the seal service life. The self-sealing mid-cavity design ensures reliable high-pressure sealing – the higher the pressure, the better the sealing performance.

Applications

• This product is designed for use in petrochemical and refining industries under extreme conditions of high temperature, high pressure, and corrosive media.

• Design Standard: GB/T 12224, ASME B16.34

• Nominal Pressure: PN100-PN420 (600LB-2500LB)

• Nominal Size: DN25-DN200 (1"-8")

Parameters

1. Body Material: Nickel Alloy (Inconel 625/718, Hastelloy C276)

2. Pressure Rating: PN100–PN420 (Class 600–2500)

3. Nominal Size: DN25-DN200 (1"-8")

4. Temperature Range: -29°C to +500°C

5. Sealing: Metal-to-metal hard sealing (Zero leakage per API 598)

6. Connection Types: Flanged (ASME B16.5), Welded (BW/SW)

7. Standards: API 594, API 6D, ASME B16.34

8.  Applicable Media: Highly corrosive environments with high sulfur and acid content