Check valvesARD-CK-012
Butt weld (BW) connectionLH2 compact inline cold check valve
Butt weld (BW)
A compact inline non-return valve for direct installation in LH2 cold boxes and cryogenic pipelines. The enclosed weld-end body has no external actuator and is selected for the required low opening pressure.
Size and pressure options require technical confirmation.
- Size
- DN 6-200 - rating dependent
- Body material
- Selected stainless-steel pressure-part schedule
- Connections
- Butt weld (BW)
- Operation
- Automatic / self-acting
- Pressure
- PN25 / PN40 - size dependent
- Temperature
- LH2 selection at -253°C; upper limit +50°C
Engineered for your application
A compact inline non-return valve for direct installation in LH2 cold boxes and cryogenic pipelines. The enclosed weld-end body has no external actuator and is selected for the required low opening pressure.
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.
Applications
Liquid HydrogenTechnical data
The specification, in detail.
| Parameter | Technical specification |
|---|---|
| Size range | DN 6-200 - rating dependent |
| Pressure ratings | PN25 / PN40 - size dependent |
| Construction | Compact enclosed inline cold check valve |
| Operation | Automatic / self-acting |
| Medium | LH2 / liquid hydrogen |
| Size / rating selection | PN25: DN6-200; PN40: DN6-50 |
| Cracking pressure | Published series band 23-65 mbar; selected value to confirm |
| Seat bypass option | Optional bypass bore; specify whether reverse leakage is permissible |
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 cylindrical inline barrel with conical shoulders and two coaxial butt-weld ends; no bonnet or actuator
| 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.
- Compact in-line pressure body
- Low opening-pressure selection
- Direct cold-box installation
| 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.
An optional bypass bore intentionally permits a small flow path. Select it only where the system specification calls for that arrangement.
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-CK-012 · 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-CK-012, or request the outline drawing for your selected configuration.
Product code ARD-CK-012 · Revision 2026-10-29. Illustrations show one configuration; approved order documentation defines the supplied assembly.
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