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Liquid Helium Containers






            High Performance
            Liquid Helium Dewars
            Praxair dewars make handling liquid
            helium easier because they have
            several features developed and
            patented specifically for this special
            purpose.
            ■  Multi-layer insulation to reduce
               evaporation losses.
            ■  Cooled shields to simplify your
               operation and help reduce costs.
     Section A – Cylinders and Containers
               Escaping helium vapor is used to
               cool the system, avoiding the need
               for cooling with nitrogen  and the
               subsequent cost and potentially      LT-100               LT-250                  LT-500
               harmful release in an enclosed area.
            ■  Light weight for easier lifting
               and moving.                                                LT-60    LT-100    LT-250   LT-500
            ■  Rugged, all-welded construction    Capacity (liters max)   60       100       250      500
               for increased performance life of    Diameter (in/cm)      24/61    24/61     32/81.3  42/106.7
               the multi-layer insulation and    Height (in/cm)           51/127.3  59/147.9  67/171.1  70/179.3
               shield system.                 Tare Weight (lb/kg)         165/75   200/91    335/152   540/245
            ■  Large-diameter neck tubes to    Neck Diameter (in/cm)      1.45/3.7   1.45/3.7   2.4/6.1   2.9/7.4
               allow for better structural integrity     NER (Static loss max. per day)    1.75%   1.25%   1%    .75%
               and for larger-sized liquid helium
               withdrawal apparatus.
            ■  Non-magnetic dewars available for
               use with Magnetic Resonance                                           Pressure Gauge
               Imaging (MRI) units.
                                                                                     Withdrawal/Fill Ball Valve
            ■  Absolute relief valve to extend use
               of dewars to airborne as well as                                      Vent/Pressurization Valve
               surface shipments.                                                    Multilayer Superinsulation
            ■  Complete Society of Automotive
               Engineers (SAE) range of dewars
               available to meet all known liquid
               helium volume needs.
                                                                                     Vapor Cooled Shields







                                                                                     Liquid Helium Reservoir
                                                                                     Vacuum Jacket





                                                                                     LT-250 Liquid Helium
                                                                                     Dewar Details




            A•14                              1-877-PRAXAIR                     www.praxairdirect.com
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