Floating Cryogenic Ball Valve

ALIS Valves offers Floating Cryogenic Ball Valves for industrial applications requiring reliable flow isolation and dependable sealing performance at extremely low temperatures. These valves feature a floating ball design in which the ball is not fixed by a trunnion and can move slightly under line pressure to press against the downstream seat, helping establish a seal within the valve’s rated operating limits. The ball contains a central bore that rotates to open or close the flow passage, providing effective on-off control for compatible cryogenic media. The valve construction incorporates suitable low-temperature body materials, ball and seat components, and sealing arrangements designed for the specified cryogenic conditions. Depending on the design, an extended stem or bonnet can help keep the stem packing and actuator away from the coldest process zone. Manual, pneumatic or electric actuation options may be available according to the application’s operating requirements.

Floating Cryogenic Ball Valves are used in liquefied natural gas (LNG) facilities, industrial gas processing plants, cryogenic storage systems, liquid nitrogen applications and other low-temperature process installations. Depending on the selected materials, pressure rating and sealing configuration, they can be specified for compatible cryogenic liquids and gases within their rated operating limits. Important selection factors include minimum operating temperature, working pressure, valve size, process media, body and seat materials, connection type, stem extension requirements and leakage performance. Since line pressure pushes the floating ball against the downstream seat, seat loading and operating torque generally increase as pressure rises, making correct sizing important for the intended service. Buyers should also evaluate thermal contraction, low-temperature sealing reliability and actuator compatibility. For liquid oxygen service, material compatibility and cleanliness requirements must be verified carefully. Selecting a properly engineered floating cryogenic ball valve helps support dependable isolation and reliable performance under specified low-temperature conditions.