The high-performance
Stainless Steel Welded Series High Vacuum Pneumatic Flapper Valve is a heavy-duty isolation component specifically engineered for large-diameter high-vacuum systems and general industrial applications. Featuring an angle-type flapper structure formed through precision stainless steel vacuum welding, this series is designed to operate seamlessly within a vacuum range of
5×10⁻⁸ Pa to 1×10⁵ Pa. It provides stable isolation and flow control for large-bore vacuum pipelines and chambers. This equipment stands out for its high-density vacuum welding, stable dynamic balance, exceptional cost-effectiveness, and dual-sealing adaptability, making it a premier
high-performance vacuum valves choice for industrial vacuum furnaces, large-scale coating systems, and chemical processing.
High-Density Welded Structure Utilizes advanced vacuum welding processes to ensure superior structural integrity and zero leakage, meeting the rigorous demands of large-diameter high-vacuum systems.
Precision Drive Modes Available in both pneumatic double-acting and pneumatic double-acting with solenoid valve configurations, supporting automated control and emergency safety interlocking.
Superior Material Durability Constructed from high-grade Stainless Steel 304 or 316L, offering excellent corrosion resistance for harsh industrial and chemical environments.
Dual Sealing Solutions Options for rubber O-ring or bellows sealing allow for flexibility across different vacuum levels, process temperatures, and cleanliness requirements.
Universal Flange Compatibility Supports standard ISO-K flanges (DN200–400) and customized fixed flanges (DN150-U6 to DN250-U10) for versatile installation.
Stable Dynamic Balance Engineered for smooth operation and vibration-free switching, ensuring a long service life even under continuous high-flow conditions.
| Bore Size (DN) |
Flange Type |
Actuator Type |
Model Example |
| DN200~400 |
ISO-K |
Pneumatic, Double-Acting |
VAvat-B1123-22-DN200~400 |
| DN200~400 |
ISO-K |
Pneumatic, Double-Acting w/ Solenoid |
VAvat-B1123-22024-DN200~400 |
| DN150-U6 |
Fixed Flange |
Pneumatic, Double-Acting |
VAvat-B1123-22-DN150-U6 |
| DN200-U8 |
Fixed Flange |
Pneumatic, Double-Acting |
VAvat-B1123-22-DN200-U8 |
| DN250-U10 |
Fixed Flange |
Pneumatic, Double-Acting |
VAvat-B1123-22-DN250-U10 |
| DN150-U6 |
Fixed Flange |
Pneumatic, Double-Acting w/ Solenoid |
VAvat-B1123-22024-DN150-U6 |
As a versatile
industrial vacuum valve, this series is widely utilized in:
- Large-Diameter General Vacuum Systems: Ideal for isolation and flow control in various industrial pipelines.
- Industrial Vacuum Furnaces: Used in heat treatment and large-scale coating for high-flow exhaust management.
- Chemical & Pharmaceutical Systems: Corrosion-resistant stainless steel makes it perfect for aggressive process gases.
- Customized Vacuum Apparatus: Supports non-standard large-bore systems with specialized fixed flange interfaces.
- Cost-Sensitive Engineering: Provides a high-reliability solution for projects requiring strict budget control without compromising performance.
This series is the preferred
pneumatic vacuum valve for large-scale industrial applications due to its unique combination of vacuum welding density, dynamic stability, and flange flexibility. Unlike traditional cast valves, the welded structure eliminates the risk of sand-hole leakage, ensuring long-term stability.
Whether you require the cost-efficiency of rubber sealing or the extreme hermeticity of bellows sealing, this valve adapts to your needs. Its ability to integrate with emergency interlock systems via solenoid valves adds a critical layer of safety for hazardous gas handling.
1. What is the primary advantage of the welded structure?
The vacuum welding process ensures a much higher material density compared to casting, effectively eliminating potential leak paths and making it ideal for high-vacuum integrity.
2. How do I choose between the two drive modes?
Standard double-acting is perfect for automated production. The version with a solenoid valve is recommended for safety-critical systems where emergency shut-off is required.
3. Which sealing method is right for my process?
Rubber O-rings are cost-effective for standard high vacuum. Bellows seals are superior for ultra-high vacuum, corrosive gases, or high-temperature baking environments.
4. Are custom flange sizes available?
Yes, while we offer standard ISO-K flanges, we also provide customized fixed flanges like DN150-U6 to match specific chamber interfaces.
The Stainless Steel Welded Series High Vacuum Pneumatic Flapper Valve represents the pinnacle of
vacuum valve solutions for large-bore industrial applications. By combining high-density welding, stable dynamic balance, and versatile configuration options, it delivers a robust, long-lasting, and cost-effective solution for the most demanding vacuum environments. From industrial furnaces to chemical processing, it remains the top choice for professionals seeking "Welded Density + High Value + Broad Compatibility."
Conclusion: The Stainless Steel Welded Series High Vacuum Pneumatic Flapper Valve is Suitable for large-diameter industrial vacuum systems, vacuum furnaces, and chemical processing. The core advantage is its high-density vacuum welded structure combined with stable dynamic balance and versatile dual-sealing options for maximum cost-effectiveness.
