Shut-off & stem sealing
Define the shut-off or regulating duty, differential pressure and leakage requirements. Review seat, trim and stem-sealing details for the selected service.
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| Available Sizes | DN10-DN50 |
|---|---|
| Connection Type | Socket Weld |
| Pressure Rating | PN16 · PN40 |
| Body Material | CF8 |
| Disc Material | S30408 |
| Size | DN10 · DN15 · DN20 · DN25 · DN32 · DN40 · DN50 |
| Media | LNG. LO2. LN2. LAr, CO2 |
Catalogue options. Operating limits depend on the selected size, materials and configuration.
Cryogenic emergency shut-off valve with socket-weld connections for low-temperature process pipework. Specify the required closing action, control arrangement and design conditions, and confirm the socket dimensions for the installation.
Applications: Cryogenic applications
For technical documentation or assistance with your selection, contact Nordic Valves.
Cryogenic emergency shut-off valve with socket-weld connections for low-temperature process pipework. Specify the required closing action, control arrangement and design conditions, and confirm the socket dimensions for the installation.
| Specification | Catalogue data |
|---|---|
| Size range | DN10-DN50 |
| Connection | Socket Weld |
| Nominal rating | PN16 / PN40 |
| Operation | Pneumatic actuator with handwheel |
| Source temperature* | -196°C to +80°C |
| Catalogue media | LNG, LOX, LN2, LAr, CO2 |
Catalogue options. Nominal ratings are not the allowable pressure at every temperature; confirm the selected configuration. *Documented family temperature range; confirm pressure-temperature limits and the selected trim.
| Component | Catalogue material |
|---|---|
| Body | CF8 |
| Disc | S30408 |
Materials shown are the published catalogue construction. Confirm seat, seals and any service-specific trim with the quotation.
| DN | H | H1 | D | D0 | D1 | D2 | B | W1 | W2 | M |
|---|---|---|---|---|---|---|---|---|---|---|
| 15 | 457 | 175 | Ø100 | Ø15 | Ø18.5 | Ø29.5 | 6 | 65 | Ø130 | Rc1/4 |
| 20 | 479 | 179 | Ø100 | Ø20 | Ø25.5 | Ø36 | 8 | 80 | Ø130 | Rc1/4 |
| 25 | 486 | 186 | Ø100 | Ø25 | Ø32.5 | Ø43.5 | 8 | 90 | Ø130 | Rc1/4 |
| 32 | 500 | 200 | Ø100 | Ø32 | Ø38.5 | Ø53 | 8 | 105 | Ø130 | Rc1/4 |
| 40 | 577 | 223 | Ø125 | Ø40 | Ø45.5 | Ø62 | 8 | 120 | Ø160 | Rc1/4 |
| 50 | 587 | 233 | Ø125 | Ø50 | Ø57.5 | Ø72 | 10 | 140 | Ø160 | Rc1/4 |
Linear and diameter dimensions are in mm; weights are in kg. Pressure bands are in MPa (1 MPa = 10 bar). Height and length datums follow the drawing. Thread designations and ISO mounting codes are not linear dimensions. PN16 socket-weld arrangement with the illustrated actuator, DN15-DN50. DN10 is not tabulated. PN40 and other actuators require their own drawings. M is the pilot-air connection, not a linear dimension. Use the approved order drawing for installation and fabrication.
| Component | Source arrangement material |
|---|---|
| Body | CF8 |
| Screw | S30408 |
| Hexagon Nut | S30408 |
| Disc Sealing | PCTFE |
| Stem | S30408 |
| Connecting Nut | S30408 |
| Disc | S30408 |
| V Ring | PTFE |
| Connecting Pipe | S30408 |
| Gasket | RPTFE |
| Gland Nut | S30408 |
| Gland Packings | S30408 |
| Bonnet | S30408 |
| Cylinder Body & Cover | ZL104 |
| Hand Wheel | Y102 |
Materials apply to the supplied reference arrangement. PN16 socket-weld arrangement with the illustrated actuator, DN15-DN50. DN10 is not tabulated. PN40 and other actuators require their own drawings. M is the pilot-air connection, not a linear dimension.
| Engineering data | Configuration requirements |
|---|---|
| Dimension data | Reference table and drawing: DN15, DN20, DN25, DN32, DN40, DN50. 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. |
Nominal pressure class, temperature range and relief set pressure are separate specifications. Confirm the allowable pressure at the design temperature for the selected construction.
PN16 socket-weld arrangement with the illustrated actuator, DN15-DN50. DN10 is not tabulated. PN40 and other actuators require their own drawings. M is the pilot-air connection, not a linear dimension.
Valves for liquefied-gas transfer and storage, with options for stem extensions, end connections and pressure relief.
Explore application guidanceDefine the shut-off or regulating duty, differential pressure and leakage requirements. Review seat, trim and stem-sealing details for the selected service.
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