High-temperature shut-off valves made of nickel alloys

Product characteristics

1. To ensure the safety and reliability of the valve, the body is made of nickel alloy by solid forging or forging followed by welding.

2. Due to their design features, shut-off valves have high hydraulic resistance and a significant pressure drop. The material of the sealing surfaces of the gate and seat must be resistant to corrosion and erosion, as well as maintain hardness at high temperatures. Therefore, the sealing surfaces are surfaced with a hard alloy to increase wear resistance and resistance to scratches, which increases the service life of the seal.

3. A double valve design can be used to reduce the torque when opening/closing the valve.

4. The middle cavity of the valve has a self-sealing design, which ensures a reliable seal at high pressure — the higher the pressure, the better the tightness.

5. A mechanism is installed between the stem and the guide to prevent the stem from rotating, so that when opening/closing, the stem only performs a translational movement. This reduces wear on the seals and ensures their tightness.

Product parameters

♦ Product application: The product is designed for use in the energy, petrochemical, chemical, and metallurgical industries under conditions of high temperature, high pressure, and aggressive environments.

♦ Product standards: GB/T 12224, ASME B16.34

♦ Nominal pressure: PN100–PN420 (600LB–2500LB)

♦ Nominal diameter: DN25–DN200 (1“–8”)

♦ Body material: Nickel alloy

♦ Operating temperature: -29°C – +500°C

♦ Operating medium: High-sulfur, high-acid, and other aggressive media.

♦ Connection type: Flanged, welded

♦ Drive: Manual, electric