Control valvesARD-CV-007
Butt weld (BW) connectionLH2 cold-box bellows control valve
Butt weld (BW)
A pneumatic bellows-sealed control valve for LH2 cold boxes and vacuum-insulated lines. The extended cold section separates the process body from the warm diaphragm actuator and positioner.
Size and pressure options require technical confirmation.
- Size
- DN 2-250 - rating dependent
- Body material
- Selected stainless-steel pressure-part schedule
- Connections
- Butt weld (BW)
- Operation
- Pneumatic diaphragm with positioner
- Pressure
- PN6 / PN25 / PN40 - size dependent
- Temperature
- LH2 selection at -253°C; upper limit +100°C
Engineered for your application
A pneumatic bellows-sealed control valve for LH2 cold boxes and vacuum-insulated lines. The extended cold section separates the process body from the warm diaphragm actuator and positioner.
Series data guide enquiry and are not verified availability or approved operating limits for every size, pressure and execution. Confirm the selected LH2 configuration and pressure-temperature rating.
Explore the related valve familyApplications
Liquid HydrogenTechnical data
The specification, in detail.
| Parameter | Technical specification |
|---|---|
| Size range | DN 2-250 - rating dependent |
| Pressure ratings | PN6 / PN25 / PN40 - size dependent |
| Construction | Pneumatic bellows-sealed globe control; angle arrangement illustrated |
| Operation | Pneumatic diaphragm with positioner |
| Medium | LH2 / liquid hydrogen |
| Size / rating selection | PN6: DN2-250; PN25: DN2-150; PN40: DN2-80 |
| Control selection | Kv, characteristic, differential pressure and actuator thrust to specify |
| Insulation interface | Vacuum weld-in flange and thermal intercepts selected for the cold box |
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: an angle body with horizontal and downward butt-weld stubs, very long cold extension, blue diaphragm actuator and black positioner
| Connection detail | Connection / selection requirement |
|---|---|
| Process ends | Specify pipe OD, wall thickness, material and weld preparation. |
| Insulation interface | Define the jacket, vacuum boundary and extension length separately from the process connection. |
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 | Selected stainless-steel pressure-part schedule |
| Trim / seats | Selected cryogenic metal and polymer trim; confirm grades for LH2 |
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.
- Pneumatic modulating operation
- Bellows isolation of the process
- Optional thermal shields and position feedback
| Engineering data | Configuration requirement |
|---|---|
| Process duty | Specify LH2 phase, design temperature, pressure, flow and differential pressure. |
| Selected assembly | Confirm insulation interface, materials, leakage acceptance and project test documentation. |
Series data guide enquiry and are not verified availability or approved operating limits for every size, pressure and execution. Confirm the selected LH2 configuration and pressure-temperature rating.
Fail position, instrument-air supply, signal protocol, closing time and any safety function are selected for the complete operating package.
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-CV-007 · 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-CV-007, or request the outline drawing for your selected configuration.
Product code ARD-CV-007 · Revision 2026-10-29. Illustrations show one configuration; approved order documentation defines the supplied assembly.
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- Size range
- DN 25–80
- Pressure ratings
- PN40 (4.0 MPa nominal)
- Temperature
- −196 to +60°C
- Connections
- Socket weld (SW)
- Medium
- LO2, LN2, LAr, LCO2, LNG
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Cryogenic solenoid valve
- Size range
- DN 25–40
- Pressure ratings
- PN25 (2.5 MPa nominal)
- Temperature
- −196 to +60°C
- Connections
- Flanged
- Medium
- LO2, LN2, LAr, LCO2, LNG
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Pneumatic diaphragm cryogenic control valve
- Size range
- DN 20-300 / NPS 3/4-12
- Pressure ratings
- ASME Class 150-2500
- Temperature
- Cryogenic design temperature to specify
- Connections
- RF / RTJ flanged / butt weld (BW)
- Medium
- LNG / LPG; exact process medium to specify