Views: 0 Author: J-VALVES Publish Time: 2025-01-09 Origin: Site
• Structure: API 6D ball valves are designed for pipeline applications and typically feature a fixed ball structure. This design ensures robustness and reliability, especially in high-pressure environments.
• Sealing: These valves offer bidirectional sealing, with resilient seats that provide excellent sealing performance even under high differential pressures.
• Additional Features: API 6D ball valves often include features such as blowdown, venting, and pressure relief, which are essential for maintaining pipeline integrity and safety.
• Materials: Common materials include carbon steel, stainless steel, and alloy steels, chosen for their strength and corrosion resistance.
Applications in Petrochemical Industry
• Pipeline Systems: API 6D ball valves are widely used in long-distance pipelines for transporting oil, natural gas, and other hydrocarbons. Their robust design and high-pressure capabilities make them ideal for these applications.
• High-Pressure Environments: These valves are suitable for high-pressure applications, ensuring reliable shutoff and minimal leakage.
• Safety and Maintenance: The inclusion of safety features such as pressure relief and blowdown capabilities makes API 6D ball valves a preferred choice for critical pipeline systems.
• Structure: GB/T 21465 gate valves feature a wedge-shaped gate that provides tight shutoff when fully closed. They are available in both rising stem and non-rising stem designs.
• Sealing: These valves offer unidirectional sealing, with excellent tightness when closed. The wedge gate compresses against the seat to create a reliable seal.
• Materials: Common materials include cast iron, carbon steel, and stainless steel, selected based on the specific application requirements.
• Testing: GB/T 21465 gate valves undergo comprehensive testing to ensure compliance with national standards, including hydrostatic and pneumatic tests.
Applications in Petrochemical Industry
• Process Plants: GB/T 21465 gate valves are commonly used in petrochemical process plants for on-off control applications. Their ability to provide tight shutoff makes them suitable for applications where minimal leakage is critical.
• Water Treatment: These valves are also used in water treatment facilities, where tight shutoff and reliability are essential.
• Versatility: GB/T 21465 gate valves are available in a wide range of sizes and materials, making them suitable for various industrial applications.
| Feature | API 6D Ball Valves | GB/T 21465 Gate Valves |
| Sealing Type | Bidirectional | Unidirectional |
| Sealing Effectiveness | Excellent sealing with minimal leakage | Excellent tight shutoff |
| Materials | Stainless steel, alloy steels | Cast iron, carbon steel, stainless steel |
| Maintenance | Low maintenance with fewer moving parts | Higher maintenance due to complex mechanism |
