LNG Cryogenic Top Entry Ball Valve

Engineered for ultra-low-temperature applications, the LNG Cryogenic Top Entry Ball Valve is designed to provide secure isolation and dependable sealing in LNG and other cryogenic services. Its top-entry construction allows access to the internal components from above, supporting in-line inspection and maintenance while minimizing pipeline removal. A cryogenic-extended stem and specialized sealing system help maintain valve performance under extreme low temperatures, where material contraction and thermal cycling can significantly affect conventional valve designs.

The LNG Cryogenic Top Entry Ball Valve is particularly suited for LNG terminals, liquefaction and regasification facilities, cryogenic storage tanks, natural gas processing, and other low-temperature hydrocarbon applications. Its robust pressure boundary, low-temperature materials, and controlled cavity and stem sealing arrangements provide a dependable solution for critical cryogenic isolation duties.

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Technical Specifications

Product description:	LNG Cryogenic Top Entry Ball Valve
Model:	SCDQ541F
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、SPE 77/200
Operation method:	LEVER/WORM GEAR/MOV/PNEUMATIC
Application fields:	LIQUEFIED NATURAL GAS

Features & Benefits

Cryogenic Service Design

Engineered with materials and sealing components selected to maintain mechanical integrity and sealing performance at extremely low temperatures.

Top-Entry Construction

Internal components can be accessed from the top, facilitating inspection and servicing without removing the complete valve from the pipeline.

Extended Cryogenic Stem

The extended bonnet or stem arrangement helps keep the stem packing and actuator area away from the extreme cold zone.

Reliable Low-Temperature Sealing

Specialized seat, stem, and body sealing arrangements accommodate thermal contraction and temperature cycling.

Low Operating Torque

Optimized ball and seat geometry helps maintain smooth operation while limiting actuator requirements under cryogenic conditions.

Robust Pressure Boundary

Pressure-containing components are designed to withstand the combined effects of low temperature, internal pressure, and thermal stresses.

Fire-Safe Configuration Available

Appropriate fire-safe designs can provide additional protection for critical LNG and hydrocarbon isolation services when specified and tested to applicable standards.

Cavity Pressure Management

Internal cavity pressure can be controlled through suitable pressure-relief or balancing arrangements to support safe operation during temperature changes.

Maintenance Accessibility

Top-entry access simplifies inspection and component servicing, helping reduce maintenance time and operational disruption.

LNG & Cryogenic Applications

Suitable for LNG liquefaction plants, storage and loading facilities, regasification terminals, natural gas processing, and other cryogenic hydrocarbon 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.