Views: 0 Author: J-VALVES Publish Time: 2024-12-31 Origin: Site
ISO 14313 is an international standard that specifies the design, manufacturing, and testing requirements for ball valves used in pipeline systems, particularly in the oil and gas industry. These valves are designed to meet the stringent demands of high-pressure and high-temperature applications.
• Pressure Ratings: ISO 14313 ball valves are designed to handle a wide range of pressures, typically up to 250 bar (3625 psi). The standard provides detailed specifications for pressure ratings based on material and operating conditions.
• Temperature Range: These valves are suitable for operating temperatures ranging from -29°C to 200°C, with some materials extending up to 350°C. The specific temperature range depends on the material used (e.g., carbon steel, stainless steel).
• Material Considerations: Common materials include carbon steel, stainless steel, and alloy steels. The choice of material significantly affects the valve's pressure-temperature rating.
GB/T 15188 is a Chinese national standard that specifies the design, manufacturing, and testing requirements for gate valves. These valves are widely used in various industrial applications, including water treatment, chemical processing, and oil and gas.
• Pressure Ratings: GB/T 15188 gate valves cover a wide range of pressures, typically up to 42 MPa (6090 psi). The specific pressure rating depends on the valve size and material.
• Temperature Range: These valves are designed to operate within a temperature range of -29°C to 425°C, with some materials extending up to 570°C. The temperature range is determined by the material used (e.g., carbon steel, alloy steel).
• Material Considerations: Common materials include cast iron, carbon steel, and stainless steel. The choice of material affects the valve's pressure-temperature rating and overall performance.
Pressure-Temperature Rating Differences
| Feature | ISO 14313 Ball Valves | GB/T 15188 Gate Valves |
| Maximum Pressure | Up to 250 bar (3625 psi) | Up to 42 MPa (6090 psi) |
| Temperature Range | -29°C to 350°C | -29°C to 570°C |
| Material | Carbon steel, stainless steel, alloy steels | Cast iron, carbon steel, stainless steel, alloy steels |
| Design | Quarter-turn operation, robust design for harsh environments | Wedge-shaped gate, rising or non-rising stem |
| Testing | Rigorous hydrostatic and pneumatic tests | Comprehensive hydrostatic and pneumatic tests |
