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May 19
CLH Series sturdy, reliable dewars designed and manufactured for low-pressure transport and storage of liquid hydrogen.

Previously hard-to-find, portable liquid hydrogen containers have been redesigned and manufactured by Cryofab, Inc. Cryofab’s CLH Series dewars are intended for low-pressure transport and storage. The operating premise is for conventional straight liquid dispensing using specially designed transfer equipment and connections.

Great effort and detail have been incorporated into the design for the relief/safety system and fill/withdrawal apparatus. The dewars are designed with the lowest possible heat leak in mind without the use of a secondary cryogen. The CLH employs state-of-the-art vapor-cooled multi shield technology in conjunction with superinsulation to effect the lowest guaranteed loss rates. The materials of construction are rugged stainless steel and all dewars are supplied with casters for easy mobility. Liquid hydrogen can now be transported from large tanker trucks into the lab.

Standard CLH dewars feature all stainless steel welded construction; a robust design; compact size; built-in vacuum insulated fill/withdrawal port; a bayonet connection for low heat leak transfers; purge ports for safety on all valves; bellows sealed vent, pressurization and isolation valves; a common vent for piping away relief devices and exhaust port. All are DOT certified 4L50.

The liquid hydrogen dewars are standard in sizes from 100 to 400 liters. Cryofab can fabricate Lh2 vessels in larger capacities and custom configurations.


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