Cryogenic Ball Valve

Engineered for extreme low-temperature services, the Cryogenic Ball Valve provides fast, dependable isolation for LNG, liquefied gases, and other cryogenic media. Its specialized low-temperature construction addresses the effects of thermal contraction and material embrittlement, while the extended stem and cryogenic sealing arrangement help protect critical operating components from direct exposure to the cold medium. The quarter-turn design enables rapid shut-off and efficient integration with automated systems.

The Cryogenic Ball Valve is particularly suited for LNG terminals, liquefaction and regasification facilities, cryogenic storage and transfer systems, natural gas processing, and industrial gas applications. Its low flow resistance, compact configuration, and reliable sealing performance make it an effective solution for critical cryogenic piping systems where safe isolation and operational stability are essential.

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Technical Specifications

Product description:	Cryogenic Ball Valve
Model:	DQ341F Cryogenic Ball Valve
Nominal diameter:	NPS 1/2”～24”
Operating temperature:	-196℃～121℃
Operating pressure:	CLASS 150～CLASS 2500
Material:	CF8、F304、CF8M、F316, etc.
Design standard:	API 6D、ISO 17292、API 608、BS 5351、BS 6364
Structural length:	ASME B16.10
Connecting end:	ASME B16.5、ASME B16.25
Test standard:	BS6364、API 598
Operation method:	Manual, worm, pneumatic and electric
Application fields:	Liquefied petroleum and natural gas

Features & Benefits

Cryogenic-Grade Materials

Body, ball, stem, and trim materials are selected to maintain toughness and mechanical properties at ultra-low temperatures.

Extended Stem Construction

The extended stem creates a thermal separation between the cryogenic fluid and the packing or actuator area, helping protect operating components from excessive cold.

Reliable Low-Temperature Sealing

Specialized seat and stem sealing systems are designed to accommodate thermal contraction while maintaining effective containment.

Quarter-Turn Operation

A 90-degree rotation provides rapid isolation and enables efficient manual or automated operation.

Low Flow Resistance

Full-bore configurations provide a relatively unobstructed flow path, helping reduce pressure loss through the valve.

Low Operating Torque

Optimized ball and seat geometry helps minimize friction and operating loads, supporting efficient actuator sizing.

Thermal Cycling Resistance

The valve is designed to accommodate repeated cooling, warming, and process temperature transitions encountered in cryogenic facilities.

Cavity Pressure Management

Suitable pressure-relief or balancing arrangements can be incorporated to manage pressure generated within the valve cavity during temperature changes.

Fire-Safe Options

Fire-safe configurations can be specified for LNG and hydrocarbon services when required and tested to applicable standards.

Wide Cryogenic Application Range

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.