Views: 0 Author: J-VALVES Publish Time: 2025-01-07 Origin: Site
• Standard: ASME B16.34 is the primary standard for bronze ball valves in North America. It specifies detailed requirements for the design, dimensions, and performance of ball valves.
• Dimensional Units: ASME uses imperial units (inches) for dimensions and pressure ratings measured in psi (pounds per square inch).
• Valve Types: Common types include full-bore and reduced-bore ball valves, with specific dimensional requirements for each type.
• Face-to-Face Dimensions: These are standardized to ensure compatibility with other pipeline components. For example, a 2-inch bronze ball valve might have a face-to-face dimension of 5.5 inches.
• Bronze Alloys: Commonly used bronze alloys include C87300 (Aluminum Bronze) and C95500 (Nickel Aluminum Bronze), chosen for their corrosion resistance and strength.
• Material Testing: Materials must meet specific mechanical properties, such as tensile strength and hardness, as defined by ASTM (American Society for Testing and Materials) standards.
• Standard: GB/T 12237 is the primary standard for bronze ball valves in China. It specifies detailed requirements for the design, dimensions, and performance of ball valves.
• Dimensional Units: GB/T uses metric units (millimeters) for dimensions and pressure ratings measured in bar.
• Valve Types: Similar valve types (full-bore and reduced-bore) are covered, but with different dimensional requirements.
• Face-to-Face Dimensions: These are standardized to ensure compatibility with European and Chinese pipeline components. For example, a DN50 (2-inch) bronze ball valve might have a face-to-face dimension of 140 mm.
• Bronze Alloys: Commonly used bronze alloys include CuAl10Fe5Mn5 (Aluminum Bronze) and CuNiAl9Fe4Nb2 (Nickel Aluminum Bronze), chosen for their corrosion resistance and strength.
• Material Testing: Materials must meet specific mechanical properties, such as tensile strength and hardness, as defined by EN (European Norm) standards.
| Feature | ASME Bronze Ball Valves | GB/T Bronze Ball Valves |
| Standard | ASME B16.34 | GB/T 12237 |
| Dimensional Units | Imperial (inches) | Metric (millimeters) |
| Pressure Ratings | Class (psi) | PN (bar) |
| Common Pressure Ratings | Class 150, Class 300 | PN10, PN16 |
| Face-to-Face Dimensions | Standardized in inches | Standardized in millimeters |
| Materials | C87300, C95500 | CuAl10Fe5Mn5, CuNiAl9Fe4Nb2 |
| Testing Requirements | Hydrostatic and seat leakage tests | Hydrostatic and seat leakage tests |
