Cryogenic Butterfly Valve

Engineered for low-temperature isolation and flow management, the Cryogenic Butterfly Valve is designed to deliver efficient operation in LNG and other cryogenic services where thermal contraction, material embrittlement, and sealing integrity are critical considerations. Its extended stem arrangement separates the operating mechanism from the cold zone, while cryogenic-compatible materials and sealing components help maintain reliable performance during extreme temperature changes.

The Cryogenic Butterfly Valve is particularly suited for LNG terminals, liquefaction and regasification facilities, cryogenic storage systems, natural gas processing, and industrial gas applications. Its compact construction, quarter-turn operation, and low flow resistance provide an efficient alternative for cryogenic piping systems where installation space, weight, and operating efficiency are important.

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Technical Specifications

Product description:	Cryogenic Butterfly Valve
Model:	DD343H-Cryogenic Butterfly Valve
Nominal diameter:	NPS 2”～48”
Nominal diameter:	-196℃～340℃
Nominal pressure:	CLASS 150～900
Material:	Main material: A351 CF8、CF8M、CF3、CF3M;A352 LCB、LCC, etc.
Design standard:	API 609、ASME B16.34、BS 6364
Structural length:	ASME B16.10、GB/T 12221、API 609
Connecting end:	ASME B16.5、ASME B16.47、ASME B16.25、GB/T 9113
Test standard:	API 598、ISO 5208、GB/T 26480、GB/T 13927、BS 6364
Operation method:	Handle, worm, motor-drive unit, pneumatic drive unit
Application fields:	Low temperature industries such as LNG, LPG, LEG, air separation, etc.

Features & Benefits

Cryogenic Material Selection

Body, disc, stem, and sealing materials are selected to maintain toughness and functional integrity at very low temperatures.

Extended Stem Design

The extended stem keeps the actuator and packing area away from the cryogenic fluid, helping reduce direct exposure to extreme cold.

Low-Temperature Sealing

Specialized seat and stem sealing arrangements accommodate thermal contraction and help maintain containment during temperature cycling.

Quarter-Turn Operation

90-degree rotation enables rapid isolation and efficient integration with pneumatic or electric actuation systems.

Compact & Lightweight Construction

The butterfly configuration requires less installation space and generally weighs less than many conventional cryogenic isolation valves.

Low Operating Torque

Optimized disc and sealing geometry helps reduce friction and actuator requirements.

Low Flow Resistance

The disc can be positioned to provide an efficient flow path, supporting reduced pressure loss in appropriately sized systems.

Thermal Cycling Capability

The valve design accounts for dimensional changes associated with repeated cooling and warming cycles.

Fire-Safe Configuration Available

Suitable fire-safe designs can be specified for LNG and hydrocarbon applications when required and tested to applicable standards.

LNG & Cryogenic Applications

Suitable for LNG storage and transfer, liquefaction plants, regasification terminals, natural gas processing, and industrial gas systems.

Application Scenario

Chemical Industry

Ball valves, butterfly valves, gate valves, globe valves, check valves, and control valves ensure safe fluid isolation, precise process control, and reliable operation in demanding chemical processing applications.

Oil Industry

Engineered for reliable isolation, flow regulation, and backflow prevention, our valve solutions support upstream, midstream, and downstream oil production and refining operations.

Natural Gas

Providing leak-tight sealing, dependable flow control, and safe pipeline operation for natural gas transmission, storage, LNG, and distribution systems.

Metallurgy

Built to withstand high temperatures, abrasive media, and harsh operating conditions in steelmaking, smelting, and metallurgical processing.

Power Generation

Ensuring reliable isolation, accurate flow control, and long-term performance in steam, boiler, turbine, and power plant systems.

Pharmaceutical

Delivering hygienic, precise, and contamination-free flow control for pharmaceutical manufacturing and clean process applications.

Steel Industry

Designed for high-temperature, high-pressure, and severe-service conditions in iron making, steelmaking, rolling mills, and auxiliary process systems.

New Energy

Supporting hydrogen, LNG, carbon capture, battery materials, and renewable energy projects with advanced valve solutions for safe and efficient process control.