CRYOGENIC CARRIER PUMPS:

A mixed - flow i.e. part centrifugal, part axial pump for cargo duty is used with cryogenic carries. It is fitted, with a scroll (or screw) type of inducer to reduce n.p.s.h. (net positive suctions head) requirement and eliminate the need for stripping pump. In practice, two or more vertically arranged stages are used, operated by hydraulic or pneumatic pressure or the deck, while bell mouthed suction at the bottom of the tank and the pump casing act as a long discharge pipe.

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