Views: 0 Author: J-VALVES Publish Time: 2024-12-27 Origin: Site
Overview of ASME B16.34 Ball Valves
ASME B16.34 is a widely recognized standard for ball valves, developed by the American Society of Mechanical Engineers (ASME). It covers the design, manufacturing, and testing of ball valves with flanged, threaded, and welding end connections. These valves are commonly used in various industries, including oil and gas, chemical processing, and power generation, due to their robustness and ability to handle high-pressure applications.
GB/T is a series of Chinese national standards that cover various types of industrial valves, including gate valves. These valves are widely used in domestic applications within China, particularly in industries such as oil and gas, chemical processing, and water treatment. GB/T gate valves are designed for linear motion and are suitable for on-off control applications.
Design and Structural Differences
| Feature | ASME B16.34 Ball Valves | GB/T Gate Valves |
| Valve Type | Quarter-turn ball valve | Linear motion gate valve |
| Structure | Fixed or floating ball design | Wedge gate with rising or non-rising stem |
| Operation | Quick 90° rotation for shutoff | Linear motion for shutoff |
| Sealing | Bidirectional sealing with low leakage | Unidirectional sealing with excellent tightness |
| Size Range | Typically larger diameters (NPS 2-60) | Various sizes, including smaller diameters |
| Feature | ASME B16.34 Ball Valves | GB/T Gate Valves |
| Material | High-grade steel alloys (carbon steel, stainless steel, alloy steel) | Cast iron, carbon steel, stainless steel |
| Pressure Rating | High-pressure applications (up to 2500 psi) | High-pressure applications (up to 35 MPa) |
| Temperature Range | Wide range, from cryogenic to high-temperature applications | Wide range, with specific materials for high-temperature applications |
• Pipeline Systems: Ideal for long-distance pipelines due to their high-pressure handling capabilities and quick operation.
• Process Plants: Suitable for applications requiring high flow rates and reliable shutoff.
• Harsh Environments: Designed to withstand corrosive fluids and extreme weather conditions, making them suitable for offshore and remote locations.
• Process Plants: Suitable for on-off control applications where tight shutoff is required.
• Water Treatment: Widely used in water treatment plants for their ability to handle high-pressure applications.
• Domestic Applications: Commonly used in domestic industrial applications within China due to their compliance with national standards.
