
AsalAra Mechanical Bellows Seal Valve – Reliable Stem Sealing with Enhanced Durability
Valves equipped with mechanical bellows seals designed to provide superior sealing performance by combining flexible metal bellows with mechanical sealing elements, ideal for demanding industrial applications.
AsalAra Mechanical Bellows Seal Valve – Reliable Stem Sealing with Enhanced Durability
Valves equipped with mechanical bellows seals designed to provide superior sealing performance by combining flexible metal bellows with mechanical sealing elements, ideal for demanding industrial applications.

The AsalAra Mechanical Bellows Seal Valve integrates a metal bellows seal with an additional mechanical sealing mechanism, offering enhanced sealing reliability for valve stems in critical process environments. The flexible metal bellows ensures a hermetic barrier against leakage, while the mechanical seal element provides additional protection against fugitive emissions.
This dual sealing system is engineered to operate under high pressure, extreme temperatures, and corrosive media, making it suitable for petrochemical, chemical, power generation, and pharmaceutical industries. The mechanical bellows seal valve significantly reduces maintenance needs and environmental impact by eliminating traditional packing materials and ensuring long-lasting, leak-tight operation.
Constructed from high-quality stainless steel and alloy materials, AsalAra’s mechanical bellows seal valves offer exceptional resistance to fatigue, corrosion, and thermal cycling.
Key Differentiator
AsalAra Mechanical Bellows Seal Valves provide a highly reliable, dual-seal system that ensures zero leakage and superior durability, making them ideal for the most demanding industrial applications requiring exceptional environmental safety.
Size Range
Valve Size (inch/mm)
½" (15 mm) to 24" (600 mm)
Range
Custom sizes available
Pressure Class
Standard
ASME B16.34
Pressure Rating
Class 150 to 900
Materials
Component
Material Options
Bellows
Stainless Steel 304/316, Inconel 625
Mechanical Seal
Carbon Steel, Stainless Steel
Valve Body
Carbon Steel, Stainless Steel, Alloy Steel
Standard Connections
- Flanged (RF, RTJ)
- Butt Weld Ends
- Threaded Ends
Product Line
AsalAra MechBell Series – Advanced Mechanical Bellows Seal Valves for Enhanced Sealing and Durability
Design Standards
- API 622 – Metal Bellows Seals for Valve Applications
- ASME B16.34 – Valve Pressure Ratings and End Connections
- ISO 15848 – Fugitive Emissions Testing
Testing Procedures
- Helium leak detection tests
- Pressure cycling endurance testing
- Corrosion and material compatibility assessments
Customization Options
- Custom alloy selections for extreme environments
- Tailored bellows and mechanical seal designs for specific valve types
- Integration with actuator systems
Feature
Benefit
Combination of bellows and mechanical seal
Superior leak-tight performance and redundancy
Flexible metal bellows
Hermetic sealing with excellent fatigue resistance
Robust mechanical sealing element
Added protection against fugitive emissions
High corrosion and temperature resistance
Suitable for harsh chemical and thermal environments
Reduced maintenance requirements
Lower operational costs and downtime
Environmentally compliant
Meets stringent regulations on emissions
- Petrochemical and refining plants
- Power generation
- Chemical processing
- Pharmaceutical manufacturing
- Critical valve applications requiring high safety and reliability
The AsalAra Mechanical Bellows Seal Valve integrates a metal bellows seal with an additional mechanical sealing mechanism, offering enhanced sealing reliability for valve stems in critical process environments. The flexible metal bellows ensures a hermetic barrier against leakage, while the mechanical seal element provides additional protection against fugitive emissions.
This dual sealing system is engineered to operate under high pressure, extreme temperatures, and corrosive media, making it suitable for petrochemical, chemical, power generation, and pharmaceutical industries. The mechanical bellows seal valve significantly reduces maintenance needs and environmental impact by eliminating traditional packing materials and ensuring long-lasting, leak-tight operation.
Constructed from high-quality stainless steel and alloy materials, AsalAra’s mechanical bellows seal valves offer exceptional resistance to fatigue, corrosion, and thermal cycling.
Key Differentiator
AsalAra Mechanical Bellows Seal Valves provide a highly reliable, dual-seal system that ensures zero leakage and superior durability, making them ideal for the most demanding industrial applications requiring exceptional environmental safety.
Size Range
Valve Size (inch/mm)
Range
½" (15 mm) to 24" (600 mm)
Custom sizes available
Pressure Class
Standard
Pressure Rating
ASME B16.34
Class 150 to 900
Materials
Component
Material Options
Bellows
Stainless Steel 304/316, Inconel 625
Mechanical Seal
Carbon Steel, Stainless Steel
Valve Body
Carbon Steel, Stainless Steel, Alloy Steel
Standard Connections
- Flanged (RF, RTJ)
- Butt Weld Ends
- Threaded Ends
Product Line
AsalAra MechBell Series – Advanced Mechanical Bellows Seal Valves for Enhanced Sealing and Durability
Design Standards
- API 622 – Metal Bellows Seals for Valve Applications
- ASME B16.34 – Valve Pressure Ratings and End Connections
- ISO 15848 – Fugitive Emissions Testing
Testing Procedures
- Helium leak detection tests
- Pressure cycling endurance testing
- Corrosion and material compatibility assessments
Customization Options
- Custom alloy selections for extreme environments
- Tailored bellows and mechanical seal designs for specific valve types
- Integration with actuator systems
Feature
Benefit
Combination of bellows and mechanical seal
Superior leak-tight performance and redundancy
Flexible metal bellows
Hermetic sealing with excellent fatigue resistance
Robust mechanical sealing element
Added protection against fugitive emissions
High corrosion and temperature resistance
Suitable for harsh chemical and thermal environments
Reduced maintenance requirements
Lower operational costs and downtime
Environmentally compliant
Meets stringent regulations on emissions
- Petrochemical and refining plants
- Power generation
- Chemical processing
- Pharmaceutical manufacturing
- Critical valve applications requiring high safety and reliability