The Neles BO Series butterfly valve is a soft-seated, single-offset butterfly valve designed for wafer-style connections. It features a lightweight hardened aluminum disc that can operate in wet and contaminated media at temperatures up to 200 °C. With a switching time of less than 1 second and a service life of up to 2 million cycles, it provides bidirectional bubble-tight shutoff. The valve is suitable for large-diameter industrial gas piping isolation and flow control in sizes from DN 200 to 1000, making it an ideal choice for high-frequency switching in VPSA vacuum pressure swing adsorption units.
Neles butterfly valve, BO Series
Neles
Neles BO Series Butterfly Valve: Fast VPSA Switching and Tight Shutoff
Soft-seated, single-offset butterfly valve for fast VPSA switching applications
- Category
- Butterfly Valves
- Nominal size range
- DN 200 - 1000 / 8" - 40"
- Pressure rating
- PN 10 - 16 / ASME Class 150
Specifications
- Valve type
- Soft-seated, single-offset butterfly valve
- Connection type
- Wafer-style
- Nominal size range
- DN 200 - 1000 / 8" - 40"
- Pressure rating
- PN 10 - 16 / ASME Class 150
- Maximum operating temperature
- 200 °C
- Shutoff performance
- Bidirectional bubble-tight shutoff
- Switching time
- Less than 1 second
- Cycle life
- Up to 2 million cycles
- Media suitability
- Suitable for wet and contaminated media
- Disc material
- Hardened aluminum
Application scenarios
High-frequency valve switching in VPSA units
For fast cycling and switching applications in vacuum pressure swing adsorption units. The valve has a switching time of less than 1 second, a cycle life of up to 2 million cycles, and bidirectional bubble-tight shutoff capability.
Pipeline control for wet and contaminated media
For gas separation-related pipelines requiring on-off control of wet and contaminated media. The valve is suitable for wet and contaminated media and uses a soft-seated, single-offset design to provide bidirectional bubble-tight shutoff.
Isolation and flow control in large-diameter industrial gas pipelines
For isolation and flow control in large-diameter industrial gas pipelines. The valve has a nominal size range of DN 200 to DN 1000, provides high flow capacity and favorable flow characteristics, and is available with pressure ratings of PN 10 to 16 or ASME Class 150.
Selection points
Dedicated design for fast VPSA cycling applications
This butterfly valve is specifically designed for VPSA units and is suitable for fast cycling and high-frequency switching applications.
Fast switching response
The valve has a switching time of less than 1 second, making it suitable for VPSA applications requiring short opening and closing cycles and rapid switching response.
Up to 2 million cycles in fast-cycling applications
The valve is suitable for fast-cycling applications, with a cycle life of up to 2 million cycles.
Hardened aluminum disc and single-offset soft-seated design
The valve features a hardened aluminum disc and a single-offset soft-seated design.
Bidirectional bubble-tight soft-seated shutoff
The valve uses a soft-seated design to provide bidirectional bubble-tight shutoff.
Large-diameter wafer-style configuration for wet and contaminated media
The valve uses a wafer-style connection, with a nominal size range from DN 200 to 1000, and is suitable for wet and contaminated media.
Installation notes
Alignment requirements for wafer-style connections
This valve uses a wafer-style connection. During installation, ensure precise alignment between the valve body and the pipe flanges on both sides to prevent disc interference caused by installation misalignment and damage to the soft seat.
FAQ
Why is the Neles BO Series butterfly valve suitable for fast-cycling applications in VPSA and VSA units?
The series uses a hardened aluminum disc to reduce rotational inertia. Combined with a two-piece shaft and four-bearing design, this enables a switching time of less than 1 second. The valve is designed for frequent opening and closing, while the four-bearing design helps extend cycle life and reduce the risk of operational sticking.
How does the BO Series butterfly valve perform in tight shutoff, and can it be used for bidirectional flow?
The valve uses a soft-seated, bidirectional bubble-tight design to provide tight shutoff under bidirectional operating conditions. The sealing element features an encapsulated design that helps ensure reliable sealing performance during opening and closing. The specific configuration must be confirmed based on the actual model and application conditions.
Which operating parameters should be checked when selecting a Neles BO Series butterfly valve?
Selection should focus on the pipe nominal size, media temperature, pressure rating, whether the application involves fast VPSA or VSA cycling, and the requirements for switching speed and bidirectional tight shutoff. The series covers sizes from DN 200 to DN 1000 (8 to 40 inches), with a maximum temperature of 200 °C and pressure ratings of PN 10 to PN 16 or ASME Class 150.
What design features of the Neles BO Series butterfly valve support flow capacity?
The series uses a two-piece shaft design to improve valve flow capacity. The hardened aluminum disc combines low rotational inertia with fast actuation. This design is suitable for valve positions in VPSA and VSA units that require high flow capacity and fast switching.
How does the BO Series butterfly valve facilitate maintenance?
The series uses a cartridge bearing design that facilitates maintenance. It also features long-life four-bearing construction, with a designed cycle life of up to 2 million cycles. For wet or contaminated media applications, inspection and maintenance plans should be developed based on actual operating conditions to maintain reliable operation and internal sealing performance.