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Place
Material
Date
'Hymatic' Miniature Gas Liquefier, 1966

'Hymatic' Miniature Gas Liquefier, 1966

1966
Model of Frankl Regenerator Packing for Heat Exchanger, 1950

Model of Frankl Regenerator Packing for Heat Exchanger, 1950

1950
Heat Exchanger of Hampson-Type Air Liquefier, 1936

Heat Exchanger of Hampson-Type Air Liquefier, 1936

1936
Valve for Hampson Air Liquefier, 1925-26

Valve for Hampson Air Liquefier, 1925-26

1925-1926
Partially cutaway model of a gas-bearing cryogenic turbo expander, and a complete miniature rotor for the turbine, by The British Oxygen Company Limited, England, 1974.

Cryogenic Expansion Turbine from Gas Liquefier, 1974

1974
Early Collins type expansion engine used in helium liquefiers, by The British Oxygen Company Limited, England, 1970-75.

Collins' Expansion Engine from Helium Liquefier, 1970-75

1970-1975
Sectioned example of a Hampson air liquefier, fitted with 2 mercury Fahrenheit thermometers by Negretti and Zambra, by The British Oxygen Company Limited., London, England, 1934.

Hampson Air Liquefier by the British Oxygen Co. Ltd., 1934

1934