Accessories and Ancillary Equipment

Flexible Helium Transfer Lines

The Janis flexible helium transfer line (Model FHT) provides a convenient and efficient method of cooling and filling most research cryostats. Inside each Janis FHT 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 inch bend radius.  The Model FHT is available in single and double right angle leg configurations, and can be manufactured to custom specifications upon request. Two uninsulated extension tips are supplied with each FHT which allow the line to be used with large capacity LHe storage dewars or tall research cryostats. Each FHT 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 bayonet joints for unusual geometries.

Replacement high efficiency transfer lines for your SuperTran or SuperTran-VP cryostat are available.  The FHT-ST transfer lines include a built-in flow valve and a charcoal cryopump. Please note that these transfer lines are optimized for use with a continuous flow style cryostat and are not suitable for transferring large volumes of liquid helium.


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