Embrittlement
Materials may lose toughness in cold service.
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Critical Service / Cryogenic & Low Temperature
Cryogenic Valves Engineered for Low-Temperature Toughness and Reliable Isolation
Extended-bonnet and material-controlled solutions for LNG and low-temperature gas.
Portfolio contextDown to −196°C*
Critical designExtended bonnet + cavity relief
Typical solutionCryogenic gate / ball / globe
Engineering focus
Design out the dominant failure risks
Confirm fluid and minimum temperature, then verify material toughness, bonnet extension, cavity relief, cleanliness and cold-test acceptance.
Thermal contraction
Clearances, torque and seat load can change.
Trapped-liquid expansion
A closed cavity can overpressure as liquid warms.
Valve selection
Match the architecture to the duty
Starting points for engineering review. Final selection depends on the completed process data and project specification.
Cryogenic Gate Valve
Best fit: Full-bore low-temperature isolation.
Engineering focus: Bonnet extension, guidance and cold leakage.
Cryogenic Ball Valve
Best fit: Quarter-turn LNG isolation.
Engineering focus: Cavity relief, seats and stem seal.
Cryogenic Globe Valve
Best fit: Isolation or controlled flow.
Engineering focus: Plug geometry, direction and thermal stress.
Buyer essentials
Six inputs for a comparable quotation
Send the same completed datasheet to every supplier and require a clear deviations list.
Composition, minimum design and normal temperature.
Design pressure, cavity case and Δp.
Extension, orientation and insulation boundary.
Seat, emission and external acceptance.
Degreasing, moisture and packaging.
Temperature, medium, soak, cycles and witness.
Service-specific RFQ data
Relief directionInsulation thicknessCold-box interfaceThermal cycles
Standards & verification
Specify measurable acceptance
Confirm edition, test medium, pressure, duration, leakage acceptance, material traceability and witness points in the purchase order.
ISO 28921-1ASME B16.34API 598ISO 15848-1
Buyer FAQ
Why use an extended bonnet?
It keeps packing away from the cold zone.
How is cavity pressure managed?
Provide a verified relief path toward the safe side.
Is an ambient test enough?
Projects may require cold leakage, torque and operation tests.
Send your RFQ for an engineering review
Share the completed datasheet, quantity, destination and delivery target for a practical recommendation and factory quotation.
*Portfolio limits depend on valve type, size, material, pressure-temperature rating and completed engineering review.
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