310S National Standard Flange Gate Valve is a specialized high-temperature isolation valve engineered for extreme thermal environments. By utilizing 310S (25Cr-20Ni) heat-resistant stainless steel and adhering to GB/T 12234 standards, this valve provides exceptional oxidation resistance and structural stability at temperatures where standard stainless steels would lose their integrity.
Description
310S (06Cr25Ni20) is an austenitic stainless steel designed for high-temperature service. It is often referred to as the “High-Temperature King” of stainless steels:
- Superior Oxidation Resistance: The high chromium and nickel content allows it to resist oxidation in continuous service at temperatures up to 1100°C.
- High-Temperature Strength: Maintains excellent creep strength and mechanical toughness even under intense thermal stress.
- Corrosion Stability: Offers good resistance to carburizing and reducing environments common in thermal processing.
Features
- GB Standard Compliance: Manufactured to GB/T 12234, GB/T 9113, and GB/T 12221 specifications, ensuring standardized dimensions and reliable performance for domestic high-heat infrastructure.
- Full Bore Flow: The gate retracts completely into the bonnet, providing an unobstructed flow path that minimizes pressure loss—essential for high-velocity steam or hot gas systems.
- Flexible Wedge Sealing: Equipped with a wedge-type gate that provides a tight, reliable shut-off, compensating for minor thermal expansion and contraction within the valve body.
- Rising Stem Design: Features an outside screw and yoke (OS&Y) design that keeps the stem threads away from the hot media, ensuring long-term operational smoothness and easy lubrication.
Specifications
| Feature | Specification |
| Design Standard | GB/T 12234 |
| Flange End | GB/T 9113 / JB/T 79 |
| Face-to-Face | GB/T 12221 |
| Body Material | 310S Stainless Steel (06Cr25Ni20) |
| Pressure Rating | PN16, PN25, PN40 |
| Temperature Range | -29°C to 1100°C (depending on pressure and environment) |
| Testing Standard | GB/T 13927 / JB/T 9092 |
Applications
- Furnace Engineering: Hot air pipelines, kiln exhaust, and heat treatment equipment.
- Power Generation: High-temperature steam isolation and biomass energy systems.
- Petrochemical: Refineries, catalytic cracking units, and thermal processing lines.
- Waste Incineration: Flue gas handling and high-temperature waste-to-energy systems.
Related Products
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