Cryogenic Liquid Hydrogen Manual Globe Valve

Product Overview

The Cryogenic Liquid Hydrogen Manual Globe Valve is a valve specifically designed for controlling liquid hydrogen and other ultra-low temperature media. It is mainly used for flow shut-off and control in liquid hydrogen transfer and storage systems.

The valve adopts a bellows-sealed stem structure, providing excellent sealing performance and reliable operation under extreme cryogenic conditions. Manufactured from cryogenic-resistant materials, the valve can operate at temperatures as low as −269 °C and can be used for long-term service in environments around 20 K.

The valve has a nominal diameter of DN20 and a nominal pressure rating of PN25. Its structural design allows convenient maintenance, as the bonnet can be withdrawn from the valve body for inspection and servicing, improving system reliability and maintenance efficiency.

Working Principle

The cryogenic liquid hydrogen manual globe valve operates through a manual driving mechanism that moves the valve stem vertically. This movement controls the opening or closing between the valve disc and valve seat, thereby regulating the flow of liquid hydrogen or completely shutting off the medium.

The valve adopts a metal bellows sealing structure, which isolates the cryogenic medium from the external environment, maintaining excellent sealing performance under ultra-low temperature conditions.

The valve body is designed with cryogenic insulation considerations, minimizing heat ingress and reducing liquid hydrogen vaporization losses while ensuring stable operation in low-temperature environments.

The 300 mm extended valve stem helps separate the cryogenic zone from the operating area, improving operational safety and ease of handling.

Key Features

• Excellent Sealing Performance:Bellows-sealed stem design with an internal leakage rate less than 10⁻⁷ Pa·m³/s and external leakage rate less than 10⁻⁹ Pa·m³/s.
• Ultra-Low Temperature Resistance:Designed for operating temperatures down to −269 °C, suitable for long-term use around 20 K
• Cryogenic-Grade Materials:Valve body and key components are manufactured from materials with excellent low-temperature toughness and reliability.
• Flexible Manual Operation:Manual drive mechanism ensures smooth and reliable opening and closing.
• Convenient Maintenance:The valve bonnet can be removed from the valve body for easier inspection and servicing.
• Optimized Structural Design:300 mm extended stem reduces the influence of cryogenic temperature on the operating end.

Applications

• Hydrogen Energy Engineering:Fluid control in liquid hydrogen storage, transfer, and refueling systems.
• Cryogenic Research Systems:Low-temperature physics experiments and deep cryogenic engineering facilities.
• Aerospace Equipment:Liquid hydrogen propellant storage, transportation, and related cryogenic systems.
• New Energy Equipment:Liquid hydrogen transfer and control systems within the hydrogen energy industry chain.
• Industrial Cryogenic Engineering:Cryogenic pipeline systems requiring high sealing performance and safety for liquid hydrogen handling.