Emergency shut-offARD-ES-005
Connection optionsVacuum-jacketed liquid-hydrogen pneumatic shut-off valve
Socket weld (SW) / butt weld (BW) / RF flanged
A lifting-type liquid-hydrogen shut-off assembly combining pneumatic linear actuation, an extended bonnet, a vacuum-jacketed body and a selected bellows sealing arrangement.
Size and pressure options require technical confirmation.
- Size
- NPS 1/2-6
- Body material
- Cryogenic stainless steel; selected grade to confirm
- Connections
- Socket weld (SW) / butt weld (BW) / RF flanged
- Operation
- Pneumatic linear actuator
- Pressure
- ASME Class 150-600
- Temperature
- -253 to +80°C
Engineered for your application
A lifting-type liquid-hydrogen shut-off assembly combining pneumatic linear actuation, an extended bonnet, a vacuum-jacketed body and a selected bellows sealing arrangement.
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 | NPS 1/2-6 |
| Pressure ratings | ASME Class 150-600 |
| Temperature range | -253 to +80°C |
| Construction | Lifting-type shut-off; vacuum jacket; bellows seal |
| Operation | Pneumatic linear 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 | Socket weld (SW) / butt weld (BW) / RF flanged |
| 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.
- Dedicated LH2 isolation
- Insulated body and extended bonnet
- Linear pneumatic operating package
| Engineering data | Configuration requirement |
|---|---|
| Shutdown function | Specify trip logic, fail action, utility loss cases and required closing behaviour. |
| Assembly qualification | Confirm seat load, bellows design, material schedule and low-temperature leak testing. |
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.
Fail-close action, response time, fire-test coverage and SIL qualification require evidence for the complete selected assembly; none follows from the product name alone.
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-ES-005 · 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-ES-005, or request the outline drawing for your selected configuration.
Product code ARD-ES-005 · Revision 2026-10-29. Illustrations show one configuration; approved order documentation defines the supplied assembly.
Explore the range
Another configuration?
Emergency shut-offARD-ES-001
Pneumatic emergency shut-off valve
- Size range
- DN 10–200
- Pressure ratings
- PN40 (4.0 MPa nominal)
- Temperature
- −196 to +60°C
- Connections
- Socket weld (SW)
- Medium
- LO2, LN2, LAr, LCO2, LNG
Emergency shut-offARD-ES-002
Cryogenic emergency shut-off valve · PN16 · BW
- Size range
- DN 65–100
- Pressure ratings
- PN16
- Temperature
- −196 to +80°C · series*
- Connections
- Butt weld (BW)
- Medium
- LNG, LOX, LN2, LAr
Emergency shut-offARD-ES-003
Cryogenic emergency shut-off valve · PN16/40 · SW
- Size range
- DN 10–50
- Pressure ratings
- PN16 · PN40
- Temperature
- −196 to +80°C · series*
- Connections
- Socket weld (SW)
- Medium
- LNG, LOX, LN2, LAr, CO2