A high performance normally closed solenoid-actuated cold valve.

Area of Science:

• Cryogenics
• Mechanical Engineering
• Materials Science

Background:

• Regulating liquid helium flow to cryogenic systems like 1 K pots is critical for stable operation.
• Existing valve designs may face challenges with durability and seat deformation, especially under demanding conditions.

Purpose of the Study:

• To present a modified electromagnetically driven, normally closed valve for precise liquid helium flow regulation.
• To enhance the durability, reliability, and operational robustness of the valve for intensive use.

Main Methods:

• Modification of an existing electromagnetically driven valve design.
• Implementation of a new feature to prevent seat deformation at room temperature.
• Tuning for improved reliability and durability.

Main Results:

• The modified valve operates in a normally closed state, requiring actuation to open.
• A novel feature effectively prevents seat deformation at room temperature.
• The design is optimized for enhanced durability and reliability in demanding cryogenic applications.

Conclusions:

• The presented valve offers a reliable and durable solution for liquid helium flow control in 1 K pots.
• The new seat-protection feature significantly improves longevity and performance under intensive use.
• This enhanced design contributes to the stability and efficiency of cryogenic experimental setups.