CRYOGENIC VALVES

Cryogenic Valves Engineered to Your Specification

Down to −196 °C for LNG and air separation.

Butterfly, ball, gate, globe and check valves for LNG receiving terminals, air separation units, petrochemical and marine fuel-gas service — built to hold tight down to −196 °C.

Every order leaves with an extended bonnet, cryogenically treated pressure parts and a liquid-nitrogen functional test at −196 °C — the three things that decide whether a valve still seals after a hundred thermal cycles.

1/2"–64" (DN15–DN1600) · Class 150–2500 (PN16–PN420)
Austenitic stainless bodies — ASTM A351 CF8M / CF3M / CF3 / CF8
API 6D / 609 / 608 / 600 / 594 / 602 · BS 6364 · ISO 28921 · ASME B16.34
Cryogenic treatment and liquid-nitrogen testing at −196 °C

Typical service

LNG receiving terminals & liquefaction trains · LNG carriers & bunkering · air separation units · petrochemical & gas-processing plants · marine fuel-gas systems

Send Your Requirement

Cryogenic valve parts immersed in a liquid-nitrogen test bath, the tank walls frosted and the cryogen boiling off

Large-bore cryogenic butterfly valve frosted over during liquid-nitrogen testing

Class 600 cryogenic ball valve with gearbox operator in the R&D product area

Large-bore cryogenic valve with a gear-operated handwheel on the shop floor

Product Range

Each family is available as a made-to-order valve sized for your operating parameters — no standard catalogue SKUs, engineering-led specification. Compare the cryogenic gate valve specifications and the cryogenic valve size and pressure range.

Triple-offset cryogenic butterfly valve with maintenance port, factory floor

Cryogenic butterfly valve seat detail — triple-offset metal sealing

FLAGSHIP

Cryogenic Butterfly Valve — Triple-Offset with Maintenance Port

Triple-offset metal-seated cryogenic butterfly valve with a maintenance port, so the seat can be serviced without cutting the line. The extended bonnet keeps the stem packing above 0 °C in service down to −196 °C.

DN200–1600 ｜ Class 150–1500

Trunnion-mounted cryogenic ball valve with gearbox operator

Cryogenic Ball Valve — Floating & Trunnion-Mounted

Floating and trunnion-mounted cryogenic ball valve with a full bore, so pressure drop stays minimal. A drip pan and extended bonnet keep the packing above 0 °C, and excess cavity pressure relieves automatically.

DN15–1050 ｜ Class 150–2500

Flexible wedge cryogenic gate valve with extended bonnet

Cryogenic Gate Valve — Flexible Wedge with Stellite-Overlaid Seats

Flexible-wedge cryogenic gate valve with double-stellite seats that hold tight as the body contracts. A relief hole in the disc balances abnormal cavity pressure, and the extended bonnet keeps the packing above 0 °C.

DN15–800 ｜ Class 150–2500

Cryogenic globe valve with conical metal-to-metal seat

Cryogenic Globe Valve — Conical Metal-to-Metal Seat

Conical metal-to-metal seat for repeatable shut-off and throttling duty. Short travel and low torque suit frequent cycling, and the extended bonnet keeps the packing above 0 °C.

DN15–800 ｜ Class 150–2500

Cryogenic check valve — axial-flow pattern, one-piece body

Cryogenic check valve — bolted-bonnet body with flow arrow, 12 inch Class 600

Cryogenic Check Valve — Lift, Swing & Axial-Flow Patterns

Lift, swing and axial-flow patterns, so the body can match the piping layout. The seats are stellite-overlaid for erosion resistance, and the swing pattern has no external leakage path.

DN15–1000 ｜ Class 150–2500

Need a different size or class?Tell us your operating parameters — we engineer to specification.Get a quote

Size Range

From DN15 to DN400+ — one production line.

Cryogenic valves are engineered to order in every size class: compact needle and ball valves for small-bore lines, volume batches of extended-bonnet gate valves, and large-bore butterfly and fully-welded ball valves supplied with lifting lugs for engineered projects.

Compact small-bore cryogenic needle and screwed-end valves on the shop floor — DN15 – DN50 ｜ compact valves

Volume batch of extended-bonnet cryogenic gate valves staged on a pallet — DN65 – DN200 ｜ volume batches

Large-bore cryogenic butterfly and extended-bonnet gate valves on a shop-floor tray — DN250 – DN400 ｜ large bore

Fully-welded large-bore cryogenic ball valve with twin lifting lugs — DN300+ engineered units ｜ lift-tested

Specification Range

Size1/2"–64" (DN15–DN1600)

Pressure classClass 150–2500 (PN16–PN420)

Operating temperature−196 °C to +150 °C

Body materialsAustenitic stainless steel ASTM A351 CF8M / CF3M / CF3 / CF8

Design standardsAPI 6D / 609 / 608 / 600 / 594 / 602, BS 6364, ISO 28921, ASME B16.34

End connectionsFlanged, butt-weld, threaded, socket-weld

Size range varies by valve family — see Size Range above for representative deliveries.

Applications

LNG receiving terminals & liquefaction plantsLNG carriers & bunkeringAir separation unitsPetrochemical & gas processingMarine fuel-gas systems

Manufacturing & Testing Capabilities

Cryogenic treatment of pressure-retaining parts for dimensional stability
Extended-bonnet design keeps stem packing above 0 °C during cryogenic service
Liquid-nitrogen functional testing at −196 °C
Fire-safe and low-emission (ISO 15848-1) certified designs
Design life 30+ years (per manufacturer's datasheet)

Liquid-nitrogen functional testing at −196 °C — a valve submerged in the LN₂ bath, surface frosted and the cryogen boiling off during the test cycle.

Cryogenic valve immersed in a liquid-nitrogen test bath

Operator pointing at a frosted valve inside the LN2 test bath

Large-bore valve frosting over during liquid-nitrogen spray testing

Certifications

Our manufacturing partner holds API 6D / 6A / 602 / 609 monograms, type approvals from ABS, DNV, CCS, LR, BV, KR and RS classification societies, SIL product certificates, fire-safe and low-emission (ISO 15848-1) certifications, and operates a CNAS-accredited laboratory. Certificates available on request.

API and CNAS certification wall at the cryogenic valve manufacturing partner

Factory Capability

Heavy-duty machining, assembly and in-house testing under one roof.

CNC lathe line with overhead crane in the workshop — CNC Machining

Large vertical turning machine for heavy valve bodies — Vertical Turning (VTL)

Large gantry-type machining centre in the valve workshop — Large Machining Centre

Valve castings and semi-finished bodies staged on pallets — Casting & Staging

Assembly and pressure-testing station with gauges and valve components — Assembly & Inspection

CNC workshop bay with palletised castings — CNC Workshop Bay

Workshop bay with overhead crane serving the machining line — Workshop Bay

Machining fixtures and tooling for valve bodies — Tooling & Fixtures

Technology centre with glass-walled laboratory — Technology Centre

Work-in-progress castings and semi-finished parts staged along the line — WIP & Semi-Finished

See how our valve plant is built — casting, machining, coating, assembly and testing in one place.

Track Record

Valves in service at LNG receiving terminals, petrochemical complexes and marine gas-fuel systems across China and overseas, including projects in the Middle East, Africa and Southeast Asia.

Cryogenic valve project reference board at the manufacturing partner

Company campus.

How to Order

Submit operating parameters

Engineering review & sizing

Quotation

Manufacturing, testing & delivery

Send your specification — our engineers will revert with a tailored proposal.