
AsalAra Single-Ply Bellows Seal Valve – Reliable Stem Sealing with Simplified Design
Valves featuring a single layer (ply) metal bellows seal providing a hermetic seal for valve stems, ideal for moderate cycle industrial applications requiring reliable leak prevention.
AsalAra Single-Ply Bellows Seal Valve – Reliable Stem Sealing with Simplified Design
Valves featuring a single layer (ply) metal bellows seal providing a hermetic seal for valve stems, ideal for moderate cycle industrial applications requiring reliable leak prevention.

The AsalAra Single-Ply Bellows Seal Valve incorporates a single thin-walled metal bellows welded to the valve stem, creating a flexible, leak-tight barrier that prevents fugitive emissions and fluid leakage. This design offers a straightforward yet effective sealing solution for valve stems, eliminating the need for traditional packing.
Single-ply bellows provide excellent sealing performance in environments with moderate operating cycles and pressure ranges. They are especially suitable for applications where stem movement is minimal but where environmental regulations or process integrity require a reliable seal.
Manufactured from premium corrosion-resistant materials such as stainless steel, these valves are well-suited for chemical processing, power generation, and other industrial sectors. The single-ply design simplifies manufacturing and maintenance while ensuring compliance with emissions standards.
Key Differentiator
AsalAra Single-Ply Bellows Seal Valves offer a streamlined sealing solution with reliable performance and reduced maintenance, providing a cost-effective choice for industrial applications requiring stringent leak control.
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 600
Materials
Component
Material Options
Bellows
Stainless Steel 304/316, Inconel 600 series
Valve Body
Carbon Steel, Stainless Steel, Alloy Steel
Standard Connections
- Flanged (RF, RTJ)
- Butt Weld Ends
- Threaded Ends
Product Line
AsalAra SinglePlySeal Series – Efficient Single-Ply Bellows Seal Valves for Reliable Service
Design Standards
- API 622 – Metal Bellows Seals
- ASME B16.34 – Valve Pressure Ratings and End Connections
- ISO 15848 – Fugitive Emissions Testing
Testing Procedures
- Leak testing via helium detection
- Pressure cycling tests
- Material corrosion resistance testing
Customization Options
- Alloy selection tailored to process media
- Various connection types and sizes
- Integration with manual or automated actuation systems
Feature
Benefit
Single thin metal bellows ply
Simplified, cost-effective design with effective sealing
Hermetic sealing
Prevents leakage and environmental contamination
Corrosion and temperature resistance
Suitable for a wide range of industrial applications
Reduced maintenance compared to packing
Lower operational costs and downtime
Compliance with emission regulations
Environmentally responsible valve operation
- Chemical processing plants
- Power generation facilities
- Water and wastewater treatment
- General industrial applications requiring reliable sealing
The AsalAra Single-Ply Bellows Seal Valve incorporates a single thin-walled metal bellows welded to the valve stem, creating a flexible, leak-tight barrier that prevents fugitive emissions and fluid leakage. This design offers a straightforward yet effective sealing solution for valve stems, eliminating the need for traditional packing.
Single-ply bellows provide excellent sealing performance in environments with moderate operating cycles and pressure ranges. They are especially suitable for applications where stem movement is minimal but where environmental regulations or process integrity require a reliable seal.
Manufactured from premium corrosion-resistant materials such as stainless steel, these valves are well-suited for chemical processing, power generation, and other industrial sectors. The single-ply design simplifies manufacturing and maintenance while ensuring compliance with emissions standards.
Key Differentiator
AsalAra Single-Ply Bellows Seal Valves offer a streamlined sealing solution with reliable performance and reduced maintenance, providing a cost-effective choice for industrial applications requiring stringent leak control.
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 600
Materials
Component
Material Options
Bellows
Stainless Steel 304/316, Inconel 600 series
Valve Body
Carbon Steel, Stainless Steel, Alloy Steel
Standard Connections
- Flanged (RF, RTJ)
- Butt Weld Ends
- Threaded Ends
Product Line
AsalAra SinglePlySeal Series – Efficient Single-Ply Bellows Seal Valves for Reliable Service
Design Standards
- API 622 – Metal Bellows Seals
- ASME B16.34 – Valve Pressure Ratings and End Connections
- ISO 15848 – Fugitive Emissions Testing
Testing Procedures
- Leak testing via helium detection
- Pressure cycling tests
- Material corrosion resistance testing
Customization Options
- Alloy selection tailored to process media
- Various connection types and sizes
- Integration with manual or automated actuation systems
Feature
Benefit
Single thin metal bellows ply
Simplified, cost-effective design with effective sealing
Hermetic sealing
Prevents leakage and environmental contamination
Corrosion and temperature resistance
Suitable for a wide range of industrial applications
Reduced maintenance compared to packing
Lower operational costs and downtime
Compliance with emission regulations
Environmentally responsible valve operation
- Chemical processing plants
- Power generation facilities
- Water and wastewater treatment
- General industrial applications requiring reliable sealing