Vacuum-jacketed cryogenic lift check valve

Weld ends - preparation to specify

An insulated lift-check configuration for DN25-50 cryogenic pipework, combining a vacuum-jacketed body arrangement with automatic non-return operation and PTFE sealing.

Size: DN 25-50
Body material: Stainless steel; exact grade to specify
Connections: Weld ends - preparation to specify

Temperature: -196 to +80°C
Pressure: PN40 (4.0 MPa nominal)
Medium: LNG / NG, LOX / O2, LN2 / N2, LAr / Ar

Configuration and operating limits are confirmed for your project.

Engineered for your application

An insulated lift-check configuration for DN25-50 cryogenic pipework, combining a vacuum-jacketed body arrangement with automatic non-return operation and PTFE sealing.

Sizes and pressure ratings depend on construction, materials and configuration. Confirm the selected pressure-temperature rating with the quotation.

Applications

LNG Industrial Gases Helium · LN2 auxiliaries Research & Technology Cryogenic Storage & Transfer

Technical data

The specification, in detail.

ARD-VJ-003 technical data
Parameter	Technical specification
Size range	DN 25-50
Pressure ratings	PN40 (4.0 MPa nominal)
Temperature range	-196 to +80°C
Medium	LNG / NG, LOX / O2, LN2 / N2, LAr / Ar
End connections	Weld ends - preparation to specify
Function	Automatic lift-type non-return
Flow direction	Under the disc to above the disc
Inspection reference	GB/T 24925

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.

Weld ends - preparation to specify

Shown configuration: two opposed short end stubs beneath a tall cylindrical insulating jacket and bolted cap; no handwheel or actuator

ARD-VJ-003 end connection details
Connection detail	Connection / selection requirement
Connection options	Weld ends - preparation to specify
Interface selection	Specify the end standard, nominal size, pipe dimensions and required mating interface.
Process welds	Confirm end preparation, pipe OD, wall thickness and the process-pipe material. The published designation is welded.
Vacuum-jacket interface	Confirm jacket dimensions, vacuum boundary and integration with the insulated line.

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.

ARD-VJ-003 material schedule
Component	Material / option
Body, bonnet and disc	Stainless steel; exact grade to specify
Seal	PTFE

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.

Vacuum-jacketed lift-check construction
PTFE sealing
Automatic operation without an external drive

ARD-VJ-003 engineering requirements
Engineering data	Configuration requirement
Installation	Confirm permitted mounting orientation and service clearance above the bolted jacket.
Insulation system	Specify the process line and jacket dimensions and required vacuum-system documentation.

Sizes and pressure ratings depend on construction, materials and configuration. Confirm the selected pressure-temperature rating with the quotation.

Cracking pressure, allowable differential pressure, installation orientation and vacuum performance require the selected assembly data; no values are inferred from the image.

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-VJ-003 · Revision 2026-10-29. Product illustrations show one configuration; the approved order documentation defines the supplied assembly.

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Dimensions

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 dimensions

Documentation

Product documents

Download the Arden data sheet for ARD-VJ-003, or request the outline drawing for your selected configuration.

Product data sheet Request dimensional drawing

Product code ARD-VJ-003 · Revision 2026-10-29. Illustrations show one configuration; approved order documentation defines the supplied assembly.

Vacuum-jacketed cryogenic lift check valve