- Welded Bellows Seal Valve
Falcon Flow Control Welded Bellows Seal Valve
Valves equipped with welded metal bellows seals that provide a completely leak-tight barrier, ideal for critical applications requiring zero emissions and maximum operational safety.
Full Description
The Falcon Flow Control Welded Bellows Seal Valve features a precision-manufactured metal bellows hermetically welded between the valve stem and bonnet, creating an absolute seal that prevents any leakage of fluids or gases.
This design eliminates the need for traditional packing materials, thereby eradicating fugitive emissions and minimizing maintenance. The welded bellows seal is engineered for use in the most demanding environments, including hazardous, toxic, and high-purity fluid services.
Manufactured with high-performance alloys such as stainless steel or Inconel, the bellows provides excellent resistance to corrosion, high pressure, and extreme temperatures. These valves are widely used in petrochemical, chemical, nuclear, and pharmaceutical industries where safety and environmental protection are critical.
Features & Benefits
Fully welded metal bellows seal
Absolute hermetic sealing, zero emissions
High corrosion and temperature resistance
Suitable for aggressive and extreme environments
Maintenance-free sealing system
Reduced downtime and maintenance costs
Eliminates packing gland leakage
Environmental compliance and enhanced safety
Robust construction
Long service life and high reliability
Suitable for hazardous fluids
Protects operators and environment from toxic leaks
Customization Options
- Alloy selection for extreme corrosive service
- Custom bellows design for specific valve configurations
- Integration with pneumatic or electric actuators
Application Segments
Nuclear power plants
Petrochemical and refining industries
Chemical processing plants
Pharmaceutical manufacturing
High-purity fluid systems
Product Line
Falcon Flow Control Belloseal Weld Series
Premium Welded Bellows Seal Valves for Zero Leakage Performance
Size Range
NPS (inch)
DN (mm)
½" (15 mm) to 24" (600 mm)
Custom sizes available
Pressure Class
Standard
Pressure Rating
ASME B16.34
Class 150 to 900
Materials
- Bellows: Stainless Steel 304/316, Inconel 625, Alloy 20
- Valve Body: Carbon Steel, Stainless Steel, Alloy Steel
Standard Connections
- Flanged (RF, RTJ)
- Butt Weld Ends
- Threaded Ends
Design Options
- API 622 – Metal Bellows Stem Seals
- ASME B16.34 – Valve Pressure Ratings and Flanged Ends
- ISO 15848 – Fugitive Emissions Testing
Testing Procedures
- Helium mass spectrometer leak detection
- Pressure cycle endurance testing
- Corrosion resistance and material verification