Butterfly valvesARD-BF-011
Connection optionsPneumatic liquid-hydrogen butterfly valve
Wafer / lug / RF flanged / butt weld (BW)
A dedicated liquid-hydrogen disc-valve configuration with an extended stuffing box and replaceable sealing-ring arrangement. A pneumatic quarter-turn drive is illustrated for remote isolation.
Size and pressure options require technical confirmation.
- Size
- NPS 1/2-6
- Body material
- Cryogenic stainless steel; selected grade to confirm
- Connections
- Wafer / lug / RF flanged / butt weld (BW)
- Operation
- Pneumatic quarter-turn actuator
- Pressure
- ASME Class 150-600
- Temperature
- -253 to +80°C
Engineered for your application
A dedicated liquid-hydrogen disc-valve configuration with an extended stuffing box and replaceable sealing-ring arrangement. A pneumatic quarter-turn drive is illustrated for remote isolation.
Series limits guide enquiry and are not verified availability or approved operating limits for every size, pressure and operator combination. Confirm the selected design and pressure-temperature rating.
Explore the related valve familyApplications
Liquid HydrogenTechnical data
The specification, in detail.
| Parameter | Technical specification |
|---|---|
| Size range | NPS 1/2-6 |
| Pressure ratings | ASME Class 150-600 |
| Temperature range | -253 to +80°C |
| Construction | Extended-stuffing-box butterfly; replaceable seal ring |
| Operation | Pneumatic quarter-turn actuator |
| Medium | LH2 / liquid hydrogen |
Nominal pressure and ASME class are different rating systems. Confirm the pressure–temperature rating for the selected material and design.
End connections
Define the interface.
Shown configuration: two RF flanged line connections
| Connection detail | Connection / selection requirement |
|---|---|
| Connection options | Wafer / lug / RF flanged / butt weld (BW) |
| Mating interface | Confirm end standard, facing or weld preparation, pipe dimensions and installation envelope. |
The illustration shows one configuration. Published connection alternatives are options for enquiry; their availability depends on size, rating, material and design. Installation dimensions come from the drawing, not the illustration.
Materials
From body to seal.
| Component | Material / option |
|---|---|
| Body and bonnet | Cryogenic stainless steel; selected grade to confirm |
| Trim, seats and seals | Selected material schedule to confirm |
Published material alternatives are configuration-dependent. H.F. denotes hard facing; the exact grade and material certificates are confirmed with the offer.
Selection notes
Defined around your application.
- Liquid-hydrogen temperature range
- Extended upper assembly
- Replaceable sealing-ring selection
| Engineering data | Configuration requirement |
|---|---|
| Hydrogen qualification | Specify cleanliness, material compatibility, seal grade, leak-test method and required traceability. |
| Installation and operation | Confirm disc clearance, sealing direction, drive load and the selected pipe interface. |
Series limits guide enquiry and are not verified availability or approved operating limits for every size, pressure and operator combination. Confirm the selected design and pressure-temperature rating.
Class ratings are not allowable operating pressure at every temperature. Confirm the selected valve and seal qualification.
Air-operated does not establish spring return, fail-close action or a SIL-rated shutdown assembly.
Published ratings do not establish suitability for every listed medium. Oxygen cleaning, material compatibility, trapped-liquid relief and project approvals are specified for the selected assembly. Liquid-hydrogen and helium service require a separate temperature and material review.
Arden product datasheet
Product code ARD-BF-011 · Revision 2026-10-29. Product illustrations show one configuration; the approved order documentation defines the supplied assembly.
Download PDFDimensions
Plan the connection.
Need installation dimensions?
No numeric dimension table is published for this reference. Request a configuration-specific outline drawing with your enquiry.
Request dimensionsDocumentation
Product documents
Download the Arden data sheet for ARD-BF-011, or request the outline drawing for your selected configuration.
Product code ARD-BF-011 · Revision 2026-10-29. Illustrations show one configuration; approved order documentation defines the supplied assembly.
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- Pressure ratings
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- Temperature
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- Connections
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- Size range
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- Size range
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- Pressure ratings
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- Temperature
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- Connections
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- Medium
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