Abstract: A vertically-disposed pump shaft is supported by an upward force against the pump shaft during periods of non use of the pump thereby off-loading bearings normally supportive of the shaft to prevent damage thereto when the pump is moved. Additionally, a lateral support is provided at a lower end of the pump to prevent lateral movement while permitting axial movement, thereby reducing stresses against the pump housing and other components.

Abstract: A vertically-disposed pump shaft is supported by an upward force against the pump shaft during periods of non use of the pump thereby off-loading bearings normally supportive of the shaft to prevent damage thereto when the pump is moved. Additionally, a lateral support is provided at a lower end of the pump to prevent lateral movement while permitting axial movement, thereby reducing stresses against the pump housing and other components.

Abstract: A submersible pumping system is disclosed for pumping cryogenic liquid from a reservoir in which a pump and motor unit is lowered to the bottom of a fluid transmitting casing in the reservoir. An isolation chamber is provided in the casing above the roof of the reservoir into which the pump and motor unit is raised for removal. A special sealing arrrangement is provided which maintains the casing and reservoir isolated from the atmosphere when lifting the pump and motor unit, yet allows a flexible suspension cable to be utilized.

Abstract: A purged valve assembly and method of sealing for a liquid transmitting casing that extends into a storage reservoir for liquid or liquified gases. The assembly includes a normally closed spring-biased foot valve mounted on the lower end of the casing. A pump and motor unit slidably mounted in the casing opens the foot valve when resting thereon. A purged double seal on the foot valve prevents any leakage of liquid or liquified gas inwardly through the valve into the interior of the casing when the pump and motor unit is lifted off the foot valve.