- Vacuum Bellows Seal Valve
Falcon Flow Control Vacuum Bellows Seal Valve
Valves equipped with metal bellows seals specifically engineered to provide hermetic sealing and prevent leakage in vacuum and ultra-high vacuum applications, ensuring reliable and contamination-free operation.
Full Description
The Falcon Flow Control Vacuum Bellows Seal Valve is designed for critical vacuum system applications where maintaining an ultra-tight seal against atmospheric contamination is essential. These valves feature a flexible metal bellows welded to the valve stem, forming a hermetic barrier that completely isolates the stem from the vacuum environment.
Constructed from materials compatible with vacuum conditions, these valves prevent any leakage or emission that could compromise vacuum integrity or system performance. They are widely used in industries such as semiconductor manufacturing, aerospace, pharmaceutical production, and scientific research facilities.
The vacuum bellows seal eliminates the need for packing, which can outgas or wear out in vacuum conditions, thereby improving reliability and reducing maintenance intervals.
Features & Benefits
Hermetic metal bellows seal
Ensures zero leakage and prevents atmospheric contamination
Designed for high and ultra-high vacuum
Maintains system integrity in demanding vacuum conditions
No packing required
Eliminates outgassing and wear, reducing maintenance
High-quality vacuum-compatible materials
Enhances valve life and performance
Compact design
Suitable for space-constrained vacuum systems
Customization Options
- Tailored bellows materials and thickness
- Special vacuum-compatible surface finishes
- Manual or automated valve actuation options
- Custom connection types for specialized vacuum systems
Application Segments
Semiconductor manufacturing equipment
Vacuum coating and thin film deposition
Aerospace vacuum systems
Pharmaceutical production lines
Research and laboratory vacuum setups
Product Line
Falcon Flow Control VacSeal Series
Reliable Vacuum Bellows Seal Valves for Critical Applications
Size Range
NPS (inch)
DN (mm)
¼" (6 mm) to 12" (300 mm)
Custom sizes available
Pressure Class
Standard
Pressure Rating
ANSI/ASME B16.34
Class 150 to 300 (designed for vacuum service)
Materials
- Bellows: Stainless Steel 304/316, Inconel alloys
- Valve Body: Stainless Steel, Carbon Steel, Alloy Steel
Standard Connections
- Flanged (ANSI/ISO Vacuum Standards)
- Butt Weld Ends
- Tri-Clamp (Sanitary) Connections
Design Standards
- ASTM F2209 – Bellows Valve Standards
- ISO 4126 – Vacuum Valve Design
- ASME B16.34 – Valve Pressure Ratings and End Connections
Testing Procedures
- Helium leak testing to detect ultra-low leakage rates
- Vacuum cycling and endurance testing
- Material outgassing and contamination testing