Cryogenic check valve

PN320 · SW

A PN320 catalogue check-valve reference with a CF8 body and socket-weld connections. Request the size-specific construction and pressure–temperature limits for the duty.

Size: DN 65–100
Body material: CF8
Connections: Socket weld (SW)

Operation: Automatic non-return
Pressure: PN320
Temperature: −196 to +80°C · series*

Configuration and operating limits are confirmed for your project.

Engineered for your application

A PN320 catalogue check-valve reference with a CF8 body and socket-weld connections. Request the size-specific construction and pressure–temperature limits for the duty.

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

Applications

LNG Industrial Gases

Technical data

The specification, in detail.

ARD-CK-007 technical data
Parameter	Technical specification
Size range	DN 65–100
Pressure ratings	PN320
Connection	Socket Weld
Operation	Automatic non-return
series temperature*	-196°C to +80°C
Medium	LNG, LOX, LN2, LAr

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.

Socket weld (SW)

Shown configuration: Block body with opposed socket-weld bosses and a circular bolted cover; no manual operator.

ARD-CK-007 end connection details
Connection detail	Connection / selection requirement
Published connection	Socket Weld
Socket interface	Confirm pipe outside diameter, socket bore, depth and wall thickness for the chosen size. SW is not a threaded or butt-weld interface.

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-CK-007 material schedule
Component	Material / option
Body	CF8
Disc	S30408

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.

Catalogue body: CF8
Published connections: Socket Weld

ARD-CK-007 engineering requirements
Engineering data	Configuration requirement
Dimension data	Order-specific dimensions required; no matched dimension table is published for this configuration.
Installation drawing	Confirm end-to-end length, socket bore/depth, pipe size and wall thickness, overall height and operating/removal clearance.
Pressure-temperature rating	Obtain the allowable-pressure table or curve versus temperature for the selected body, seat and seals, including minimum and maximum design temperature. Nominal rating and a family temperature range do not define this curve.

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

*−196 to +80°C is the series/reference range. It does not establish the allowable pressure at each temperature or suitability of every seat, seal and actuator. Confirm the selected assembly’s minimum design temperature and pressure–temperature curve.

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-007 · Revision 2026-10-28. Product illustrations show one configuration; the approved order documentation defines the supplied assembly.

Download PDF

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-CK-007, or request the outline drawing for your selected configuration.

Product data sheet Request dimensional drawing

Product code ARD-CK-007 · Revision 2026-10-28. Illustrations show one configuration; approved order documentation defines the supplied assembly.

Cryogenic check valve