Views: 0 Author: J-VALVES Publish Time: 2025-01-14 Origin: Site
• Scope: EN 12662 specifies the requirements for industrial valves, including ball valves, used in nuclear power plants. It covers design, materials, dimensions, and testing to ensure reliability and safety.
• Pressure Ratings: The standard covers a range of pressure ratings suitable for nuclear applications, ensuring the valves can handle the high pressures and temperatures encountered in these environments.
• Temperature Range: EN 12662 ball valves are designed to operate reliably at temperatures typically ranging from -20°C to 200°C, with specific materials allowing for higher temperature applications.
• Design Features: The valves are designed with features such as double block-and-bleed, fire-safe design, and blowout-proof stem to enhance safety and reliability.
• Testing: Rigorous hydrostatic and pneumatic tests are conducted to ensure compliance with the standard. The testing protocols are designed to simulate the demanding conditions of nuclear power plants.
• Scope: GB/T 21465 specifies the requirements for gate valves used in nuclear power plants. It covers design, materials, dimensions, and testing to ensure reliability and safety.
• Pressure Ratings: The standard covers a range of pressure ratings suitable for nuclear applications, ensuring the valves can handle the high pressures and temperatures encountered in these environments.
• Temperature Range: GB/T 21465 gate valves are designed to operate reliably at temperatures typically ranging from -20°C to 200°C, with specific materials allowing for higher temperature applications.
• Design Features: The valves are designed with features such as wedge-shaped gates and metal-to-metal seats to provide tight shutoff and reliability.
• Testing: Comprehensive testing protocols are in place to ensure compliance with the standard, including hydrostatic and pneumatic tests.
| Feature | EN 12662 Ball Valves | GB/T 21465 Gate Valves |
| Design | Floating ball, bidirectional sealing | Wedge gate, unidirectional sealing |
| Temperature Range | -20°C to 200°C | -20°C to 200°C |
| Pressure Ratings | Suitable for high-pressure applications | Suitable for high-pressure applications |
| Sealing Performance | Bidirectional sealing with minimal leakage | Excellent tight shutoff in one direction |
| Materials | Stainless steel, high-temperature alloys | Carbon steel, stainless steel, high-temperature alloys |
| Safety Features | Fire-safe design, double block-and-bleed, blowout-proof stem | Fire-safe design, tight shutoff |
| Applications | Nuclear power plants, high-pressure applications | Nuclear power plants, on-off control applications |
