Pressure regulatorsARD-RG-003
Connection to confirm connectionLiquid-hydrogen pressure-reducing valve
End connections to specify
A liquid-hydrogen pressure-reducing enquiry reference for a defined upstream and downstream pressure duty. Regulating architecture, sensing arrangement and insulation are selected from the actual process cases.
Size and pressure options require technical confirmation.
- Size
- Nominal size to specify
- Body material
- Confirm material
- Connections
- End connections to specify
- Operation
- Regulating system to select; spring-loaded arrangement illustrated
- Pressure
- Inlet / outlet pressure to specify
- Temperature
- LH2 service down to -253°C; selected limits to confirm
Engineered for your application
A liquid-hydrogen pressure-reducing enquiry reference for a defined upstream and downstream pressure duty. Regulating architecture, sensing arrangement and insulation are selected from the actual process cases.
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.
Technical data
The specification, in detail.
| Parameter | Technical specification |
|---|---|
| Size range | Nominal size to specify |
| Pressure ratings | Inlet / outlet pressure to specify |
| Temperature range | LH2 service down to -253°C; selected limits to confirm |
| Construction | LH2 pressure-reducing family; selected architecture to confirm |
| Operation | Regulating system to select; spring-loaded arrangement illustrated |
| 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: a flanged regulator body, extended upper assembly and spring housing
| Connection detail | Connection / selection requirement |
|---|---|
| Connection options | End connections to specify |
| Mating interface | Confirm end standard, facing or weld preparation, pipe dimensions and installation envelope. |
| Configuration selection | The flanged layout and regulator exterior are illustrative; the selected pressure-reducing design requires confirmation. |
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 |
|---|---|
| Pressure parts | Hydrogen-compatible grades to select |
| Regulating trim and seals | Duty-specific LH2 material system 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.
- Dedicated LH2 pressure-reduction duty
- Inlet/outlet cases define the selection
- Sensing and control arrangement specified for the project
| Engineering data | Configuration requirement |
|---|---|
| Regulator sizing | Provide inlet range, outlet set point, minimum/normal/maximum flow and permissible droop. |
| Process integration | Confirm fluid phase, flashing risk, sensing arrangement, relief protection and insulated interfaces. |
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.
No set-point band, capacity, Cv/Kv, droop or self-operated/pilot mechanism is established by the family statement. Select these explicitly before quotation.
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-RG-003 · 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-RG-003, or request the outline drawing for your selected configuration.
Product code ARD-RG-003 · Revision 2026-10-29. Illustrations show one configuration; approved order documentation defines the supplied assembly.
Explore the range
Another configuration?
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Cryogenic pressure-building valve
- Size range
- DN 20–50
- Pressure ratings
- PN40 (4.0 MPa nominal)
- Temperature
- −196 to +60°C
- Connections
- Threaded / union
- Medium
- O2, N2, Ar, CO2, NG
Pressure regulatorsARD-RG-002
Self-operated pressure-reducing valve
- Size range
- DN 25–150
- Pressure ratings
- PN40 (4.0 MPa nominal)
- Temperature
- −196 to +60°C
- Connections
- Socket weld (SW)
- Medium
- O2, N2, Ar, CO2, NG