- Metal Bellows Seal
Falcon Flow Control Metal Bellows Stem Seal
A flexible, corrosion-resistant metal component designed to provide a hermetic seal around valve stems, eliminating leakage and protecting the environment in demanding industrial applications.
Full Description
The Falcon Flow Control Metal Bellows Seal is engineered to offer a reliable, leak-tight sealing solution for valve stems in critical service environments. Manufactured from high-grade stainless steel or nickel alloys, the metal bellows is a convoluted, flexible tube that accommodates axial and lateral movement of the valve stem while maintaining a perfect hermetic seal.
This sealing technology eliminates the need for traditional packing, significantly reducing fugitive emissions and maintenance requirements. The bellows seal is ideal for applications involving toxic, hazardous, or high-purity fluids where environmental compliance and operational safety are paramount.
The metal bellows is designed to withstand high pressure, extreme temperatures, and corrosive media, making it suitable for petrochemical, power generation, pharmaceutical, and chemical industries.
Features & Benefits
Hermetic sealing technology
Eliminates stem leakage and fugitive emissions
High flexibility and fatigue resistance
Accommodates valve stem movement and thermal expansion
Corrosion-resistant materials
Suitable for aggressive and corrosive media
Maintenance-free design
Reduces downtime and maintenance costs
High temperature and pressure rating
Reliable operation in extreme conditions
Eliminates need for traditional packing
Improves environmental compliance and operator safety
Customization Options
- Tailored bellows geometry for specific valve designs
- Choice of exotic alloys for highly corrosive environments
- Integration with actuator and valve assembly customization
Application Segments
Petrochemical and refining plants
Power generation facilities
Pharmaceutical and biotech industries
Chemical processing
Nuclear power and critical safety valves
Product Line
Falcon Flow Control Belloseal Series
Advanced Metal Bellows Seals for Leak-Free Valve Operation
Size Range
Stem Diameter (mm)
Range
10 mm – 150 mm
Customized sizes available
Pressure Class
Standard
Pressure Rating
ASME B16.34
Class 150 to 600
Materials
- Bellows: Stainless Steel 304/316, Inconel 625, Monel 400
- End Fittings: Stainless Steel, Alloy Steel
Standard Connections
- Welded directly to valve stem and bonnet (per ASME, API standards)
- Flanged or threaded adapters as required
Design Standards
- API 622 – Metal Bellows Seals for Valve Applications
- ASME B16.34 – Valves Flanged, Threaded and Welding End
- ISO 15848 – Industrial valves – Measurement, test and qualification procedures for fugitive emissions
Testing Procedures
- Helium leak testing for hermetic integrity
- Pressure and cyclic endurance testing
- Corrosion and material compatibility tests