Views: 0 Author: J-VALVES Publish Time: 2024-10-23 Origin: Site
ISO 9393 is an international standard that specifies the pressure test methods and requirements for industrial valves made from thermoplastic materials, including ball valves. The standard aims to ensure the reliability and safety of these valves in various industrial applications.
• Test Medium: ISO 9393 typically uses water as the test medium for flow coefficient testing.
• Test Conditions: The standard specifies that the test should be conducted at ambient temperature (20±2°C) with a controlled pressure drop across the valve.
• Measurement: Flow rate is measured using a calibrated flow meter or volumetric method. The flow coefficient (Cv) is calculated based on the measured flow rate and pressure drop.
• Consistency: ISO 9393 ensures consistent testing methods across different manufacturers, promoting compatibility and reliability.
• Material Considerations: The standard is specifically designed for thermoplastic materials, ensuring that the testing methods are suitable for these materials.
GB/T 13927 is a Chinese national standard that specifies the pressure test methods and requirements for industrial valves, including gate valves. The standard aims to ensure the reliability and safety of these valves in various industrial applications.
• Test Medium: GB/T 13927 also uses water as the test medium for flow coefficient testing.
• Test Conditions: The standard specifies that the test should be conducted at ambient temperature (20±2°C) with a controlled pressure drop across the valve.
• Measurement: Flow rate is measured using a calibrated flow meter or volumetric method. The flow coefficient (Cv) is calculated based on the measured flow rate and pressure drop.
• Comprehensive Testing: GB/T 13927 provides comprehensive testing requirements, including shell testing, seat testing, and flow coefficient testing.
• Material Considerations: The standard covers a wide range of materials, including carbon steel, stainless steel, and alloy steel, ensuring suitability for various industrial applications.
Comparative Analysis
| Feature | ISO 9393 Ball Valves | GB/T 13927 Gate Valves |
| Standard | International Standard for Thermoplastic Valves | Chinese National Standard for Industrial Valves |
| Test Medium | Water | Water |
| Test Conditions | Ambient temperature (20±2°C), controlled pressure drop | Ambient temperature (20±2°C), controlled pressure drop |
| Material Considerations | Thermoplastic materials (e.g., ABS, PE, PP) | Wide range of materials (carbon steel, stainless steel, alloy steel) |
| Applications | Industrial applications involving thermoplastic valves | Various industrial applications, including petrochemical, water treatment, and oil and gas |
