Views: 0 Author: J-VALVES Publish Time: 2024-12-13 Origin: Site
In industrial applications, selecting the appropriate valve type and standard is crucial for ensuring system reliability, efficiency, and safety. JIS B2071 and GB/T 12236 are two prominent standards that guide the design and manufacturing of ball valves and gate valves, respectively.
• Standard: JIS B2071 is a Japanese Industrial Standard that specifies the design, dimensions, and performance requirements for steel ball valves.
• Dimensional Units: JIS B2071 uses metric units (millimeters) for dimensions and pressure ratings measured in MPa.
• Valve Types: JIS B2071 covers a range of ball valve designs, including full-bore and reduced-bore options.
• Face-to-Face Dimensions: These are standardized to ensure compatibility with other pipeline components. For example, a DN50 (2-inch) ball valve might have a face-to-face dimension of 140 mm.
• Structural Design: JIS B2071 ball valves often feature a floating ball design, which allows the ball to move slightly under pressure, ensuring tight sealing.
• Standard: GB/T 12236 is a Chinese National Standard that specifies the design, dimensions, and performance requirements for steel gate valves.• Dimensional Units: GB/T 12236 uses metric units (millimeters) for dimensions and pressure ratings measured in MPa.
• Valve Types: GB/T 12236 covers a range of gate valve designs, including rising stem and non-rising stem options.
• Face-to-Face Dimensions: These are standardized to ensure compatibility with other pipeline components. For example, a DN50 (2-inch) gate valve might have a face-to-face dimension of 140 mm.
• Structural Design: GB/T 12236 gate valves often feature a wedge-shaped gate that provides tight shutoff when fully closed.
| Feature | JIS B2071 Ball Valves | GB/T 12236 Gate Valves |
| Standard | JIS B2071 | GB/T 12236 |
| Dimensional Units | Metric (millimeters) | Metric (millimeters) |
| Pressure Ratings | K (e.g., 10K, 20K) | PN (e.g., PN10, PN16) |
| Common Pressure Ratings | 10K (10 MPa), 20K (20 MPa) | PN10 (10 bar), PN16 (16 bar) |
| Face-to-Face Dimensions | Standardized in millimeters | Standardized in millimeters |
| Materials | SCS13, SCS14, stainless steel alloys | Carbon steel, stainless steel, alloy steels |
| Testing Requirements | Hydrostatic and seat leakage tests | Hydrostatic and seat leakage tests |
