PUMPEANLEGG FOR FLYTENDEGJORT GASS.

摘要

A liquid-gas pumping apparatus includes an immersion pump and motor unit vertically slidable within a housing extending into a cryogenic liquid storage tank, a plurality of valves opened by engagement with the pump and motor unit are circumferentially spaced adjacent the bottom of the housing with one of the valves adapted to be opened before the other valves and permanent electrical supply contacts extending through the housing to be engaged by contacts on the pump and motor unit.