Flexible Helium Transfer Lines

Flexible helium transfer (FHT) lines provide a convenient and efficient method of cooling and filling most research cryostats. Inside each FHT line is a length of flexible metal tubing surrounded by multiple radiation shields and vacuum insulation. Specially constructed spacers prevent the inner line from contacting the outer vacuum jacket for maximum efficiency during operation. The flexible section has a 12-in bend radius. Custom transfer lines can be quoted upon request.

Two uninsulated extension tips are supplied with each FHT line that allow the line to be used with large-capacity LHe storage Dewars or tall research cryostats. Each FHT line includes a reliable valve used to evacuate and seal the insulating vacuum space. Foot valves and in-line LHe valves can be supplied with these transfer lines, as well as for bayonet joints for unusual geometries.

Looking for replacement high-efficiency transfer lines for your SuperTran or SuperTran-VP? Visit the FHT-ST transfer line page on the Lake Shore website. These transfer lines include a built-in flow valve and a charcoal cryopump. The FHT-ST lines are optimized for use with a continuous flow style cryostat and are not suitable for transferring large volumes of liquid helium, however.

For more information about the transfer lines, including specifications and versions available, visit the product page on the Lake Shore website.