Views: 0 Author: J-VALVES Publish Time: 2025-05-08 Origin: Site
• Floating Ball Design: DIN 3352 ball valves typically feature a floating ball design, where the ball is not rigidly fixed to the stem. This allows the ball to move slightly under pressure, ensuring a tight seal against the seat.
• Bidirectional Sealing: These valves provide bidirectional sealing, meaning they can effectively seal flow in both directions. This is particularly useful in applications where flow direction may change.
• High-Temperature Compatibility: The design includes features such as extended valve stems and thermal expansion compensation to prevent issues like high-temperature seizing and wear.
• Wedge Gate Design: GB/T 12237 gate valves feature a wedge-shaped gate that compresses against the seat to create a seal. This design provides excellent tight shutoff, especially in on-off control applications.
• Unidirectional Sealing: These valves are designed for unidirectional sealing, meaning they are most effective when flow is in one direction. However, they can still provide reliable sealing in reverse flow conditions.
• High-Temperature Compatibility: The design includes features such as extended valve stems and thermal expansion compensation to prevent issues like high-temperature seizing and wear.
| Feature | DIN 3352 Ball Valves | GB/T 12237 Gate Valves |
| Design | Floating ball, bidirectional sealing | Wedge gate, unidirectional sealing |
| Temperature Range | Up to 400°C | Up to 450°C |
| Pressure Ratings | 1.6 MPa to 40 MPa | 1.0 MPa to 32.0 MPa |
| Sealing Performance | Bidirectional sealing with minimal leakage | Excellent tight shutoff in one direction |
| Materials | Stainless steel, high-temperature alloys | Carbon steel, stainless steel, high-temperature alloys |
| Applications | High-pressure, high-temperature applications | High-temperature, on-off control applications |
