Cryogenic lift check valve · PN40 · SW — reference-based product illustration, Socket weld (SW) — Reference-based product illustration. The shown size and connections are one catalogue configuration.

Reference-based product illustration. The shown size and connections are one catalogue configuration.

Check valvesARD-CK-005

Socket weld (SW) connection

Cryogenic lift check valve

PN40 · SW

A CF8 lift check valve for larger socket-weld cryogenic lines. The DN65–100 range provides automatic non-return operation.

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

Operation: Automatic non-return
Pressure: PN40
Temperature: −196 to +80°C · series*

Configuration and operating limits are confirmed for your project.

Engineered for your application

A CF8 lift check valve for larger socket-weld cryogenic lines. The DN65–100 range provides automatic non-return operation.

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-005 technical data
Parameter	Technical specification
Size range	DN 65–100
Pressure ratings	PN40
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: Rounded inline body, opposed socket-weld ports and a bolted lower cover.

ARD-CK-005 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.
Reference drawing scope	PN50 socket-weld body reference. The current product offers PN40; confirm the PN40 body drawing before using these dimensions.

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-005 material schedule
Component	Material / option
Body	CF8
Disc	S30408

Supplied reference arrangement

Materials apply to the supplied reference arrangement. PN50 socket-weld body reference. The current product offers PN40; confirm the PN40 body drawing before using these dimensions.

ARD-CK-005 reference arrangement materials
Component	Reference arrangement material
Hexagon Screw	S30408
Gasket	S30408
Hexagon Nut	S30408
Bonnet	CF8
Split Pin	S30408
Gasket	RPTFE
Disc	S30408
Body	CF8
Disc Sealing	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.

Catalogue body: CF8
Published connections: Socket Weld

ARD-CK-005 engineering requirements
Engineering data	Configuration requirement
Dimension data	Reference table and drawing: DN65, DN80, DN100. Dimensions and connection reference.
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.

Catalogue construction and supplied reference-arrangement materials are shown separately below the material schedule. Use the approved drawing for the quoted body, trim and connections.

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-005 · Revision 2026-10-28. Product illustrations show one configuration; the approved order documentation defines the supplied assembly.

Download PDF

Dimensions

Plan the connection.

Dimensions apply to the tabulated version only. Confirm the approved outline drawing for the selected size, rating and connections before installation.

PN50 socket-weld body reference. The current product offers PN40; confirm the PN40 body drawing before using these dimensions.

Dimensions and connection reference

ARD-CK-005 dimensions
DN	H	L	D0	D1	D2	B	Weight (kg)
65	112	216	Ø65	Ø70	Ø76	7	10
80	118	241	Ø80	Ø81	Ø89	8	14
100	138	292	Ø100	Ø100	Ø108	9	16

Linear dimensions are in mm and weights in kg unless stated otherwise. Pressure bands in MPa, thread designations and ISO mounting codes are not linear dimensions. Thread designations follow the reference. An em dash means no value is published. Confirm a certified outline drawing for the selected configuration.

Documentation

Product documents

Download the Arden data sheet for ARD-CK-005, or request the outline drawing for your selected configuration.

Product data sheet Dimensions & installation data

Product code ARD-CK-005 · Revision 2026-10-28. Illustrations show one configuration; approved order documentation defines the supplied assembly.

Cryogenic lift check valve