An economical and practical solution for transferring liquid nitrogen exists where double-wall insulated tubing is commercially available. This application eliminates the need for the more expensive and fixed Vacuum Jacketed alternative. Just simply cut and reconnect with compression fittings or solder joints. The foam can be slit, glued, and taped for seamless and frost-free joints.
It very simple to select and use a solenoid valve for transferring LN2 or venting cryogenic gases. KIC distributes the Jefferson Cryogenic valves keeping inventory for immediate delivery. Both direct acting and pilot operated models are available with Brass bodies. For Stainless Steel or reverse acting (NO) applications, special orders are possible.