The Cryogenic Globe Valve is used for shut-off, isolation, and flow control in cryogenic media pipelines. Featuring an extended bonnet, cryogenic sealing structure, and materials suitable for cryogenic conditions, it can be used in LNG, liquid nitrogen, liquid argon, and other cryogenic media systems.
Core Advantages
Extended Valve Cover: Reduces the conduction of cryogenic temperatures to the stuffing box, improving packing seal performance under cryogenic conditions.
Live-Loaded Packing: Employs disc spring preload to compensate for packing thermal expansion and contraction, reducing the risk of stem leakage.
Cryogenic Materials: Optional materials include ASTM A351 CF8/CF8M/CF3M and ASTM A182 F304/F316/F316L, selected according to temperature, pressure, and medium.
Sealing Structure: Can be configured with Stellite, PTFE, PCTFE, and other sealing materials to meet various cryogenic conditions.
Technical Specifications
|
Parameter |
Specification |
|
Valve Type |
Cryogenic Globe Valve, Extended Bonnet |
|
Nominal Size |
NPS 1/2"–24" / DN15–DN600* |
|
Pressure Rating |
Class 150–1500 / PN16–PN250* |
|
Design Temperature |
Down to -196°C* |
|
Body Material |
ASTM A351 CF8 / CF8M / CF3 / CF3M |
|
Forged Material |
ASTM A182 F304 / F316 / F316L |
|
Trim Material |
SS304 / SS316 / SS316L / Nitronic 50 |
|
Seat / Disc Facing |
Stellite / PTFE / PCTFE |
|
Packing |
PTFE / Flexible Graphite / Live-Loaded |
|
End Connection |
RF / RTJ / BW / SW |
|
Operation |
Handwheel / Gear / Pneumatic / Electric |
|
Media |
LNG / LOX / LIN / LAR / Liquid Ethylene |
|
Design Standards |
ASME B16.34 / API 602 / BS 1873 / ISO 28921* |
|
Testing Standards |
API 598 / EN 12266-1 / BS 6364* |
|
Face-to-Face |
ASME B16.10 / EN 558 |
|
LOX Cleaning |
ASTM G93 / EN 12300, When Specified |
|
Documents |
MTC 3.1 / Test Report / NDT Report / CoC |
Cryogenic Design
Gas Phase Isolation: An extended valve cover creates a gas phase space, reducing the conduction of cryogenic temperatures to the packing area.
Valve Chamber Pressure Control: Pressure balancing or valve chamber pressure relief structures can be configured according to the medium and operating conditions.
LOX Cleaning: For liquid oxygen applications, degreasing, cleaning, inspection, and packaging can be performed according to ASTM G93, EN 12300, or project requirements.
Application Areas
LNG: Used in LNG receiving, storage, vaporization, and loading/unloading systems.
Air Separation and Industrial Gases: Suitable for cryogenic pipelines containing liquid oxygen, liquid nitrogen, and liquid argon; oxygen cleaning treatment can be configured.
Cryogenic Petrochemicals: Used in pipelines containing liquid ethylene and other cryogenic hydrocarbons.
Manufacturing and Quality Control
CNC Machining: CNC machining and dimensional inspection are performed on critical sealing surfaces, valve stems, and connection dimensions.
Material Traceability: Critical pressure-bearing components support furnace number, MTC 3.1, and PMI traceability.
NDT Inspection
RT, PT, MT and other non-destructive testing services are available upon request.
Customization and Supply
Connection and Structure
Supports RF, RTJ, BW, SW and project-specified structural dimensions.
Actuator
Can be equipped with handwheels, gearboxes, pneumatic or electric actuators, selected according to torque and control requirements.
OEM Customization
Supports customization of nameplates, packaging, drawings, inspection plans and technical documents.
MOQ and Delivery Time
MOQ can be ordered from 1 unit. Standard configurations typically take 3–4 weeks; special materials, actuators or cryogenic testing typically take 6–8 weeks, subject to order confirmation.
FAQ
Q: What is the Minimum Order Quantity (MOQ)?
A: The MOQ for standard cryogenic shut-off valves starts from 1 unit. Bulk purchases and project orders are subject to confirmation based on specifications and quantity.
Q: What is the lead time for standard products?
A: Standard specifications typically take 3–4 weeks; orders for special materials, actuators, or cryogenic testing typically take 6–8 weeks, with the final lead time subject to order confirmation.
Q: Can you provide customized specifications?
A: Yes. Customization is supported for size, pressure rating, material, end connections, sealing materials, operating methods, and actuators.
Q: What materials are available?
A: Common materials include ASTM A351 CF8/CF8M/CF3M and ASTM A182 F304/F316/F316L, which can be selected based on the medium, temperature, and pressure.
Q: Can you provide cryogenic testing?
A: Yes. Cryogenic sealing, stem leakage, and operational testing can be performed according to project requirements, and corresponding test reports will be provided.
Q: Can testing be performed according to BS 6364?
A: We can provide BS 6364 cryogenic testing according to the procurement specifications. Specific test temperatures, pressures, and acceptance requirements will be confirmed on a project-by-project basis.
Q: Can it be used for liquid oxygen (LOX)?
A: Yes. For LOX applications, degreasing, cleaning, inspection, and specialized packaging can be performed according to ASTM G93, EN 12300, or project specifications.
Q: What quality documents can be provided?
A: We can provide MTC 3.1, pressure test reports, cryogenic test reports, PMI, NDT, dimensional inspection records, and conformity documents, depending on order requirements.
Q: Do you support third-party inspection?
A: We support third-party inspections such as SGS, BV, and TÜV. We can also assist the buyer with document review, dimensional checks, pressure testing, and witnessing of cryogenic tests.
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