Cryogenic centrifugal pump
Centrifugal pump is a pump where liquid moves and required head forms by means of centrifugal force raising as a result of impeller blades effect on fluid.
Cryogenic pumps are classified as single-staged with one impeller and multi-staged with several impellers however with the same working principle.
Cryogenic centrifugal pumps are used for large amounts of liquefied industrial gas (liquid oxygen, liquid argon, liquid nitrogen) pumping. It is also reasonable to use pumps of such a type for liquid pumping from one capacity to another.
Cryogenic piston pump
Piston pumps are designated for conversion of motor mechanical energy into pumped fluid mechanical energy.
Pump fluid suction is caused by low pressure formation in a process chamber during a piston right motion and with closed discharge valve
Cryogenic piston pumps can be both of a single low-temperature section type and a multiple low-temperature section type.
Cryogenic piston pumps are used for buffer reservoir filling, cryogenic cylinder filling, as well as for industrial and medical bottle filling with gaseous products. It is reasonable to use pumps of such a type also in severe application (industrial application of LNG and CO2) where high pressure is a significant factor.