Patent ID: 8439654

Claim:
A system for pumping liquefied gas, comprising: a container having an access port disposed at an upper end thereof, the access port having a central axis; a pump suspended within the container from at least one pipe segment, the pump having a fluid inlet in fluid communication with a liquefied gas stored in the container and a fluid outlet; a sealing gland disposed on the access port and adapted to seal off the access port, wherein the at least one pipe segment has a first end and a second end, the first end in fluid communication with the fluid outlet of the pump, and the second end in fluid communication with an exterior of the container, wherein the pump is capable of lifting the liquefied gas through the at least one pipe segment while the pump is suspended within the container and discharging the liquefied gas from the container at a pressure sufficient for distribution or further processing; an aperture formed through a portion of the sealing gland; and a circumferential seal disposed about an inner surface of the aperture, wherein a portion of the at least one pipe segment protrudes through the aperture to the exterior of the container, and the seal within the aperture interacts with the portion of the at least one pipe segment to create a seal against escaping gas therebetween, wherein the at least one pipe segment can move through the aperture without removing the sealing gland from the access port while maintaining the seal against escaping gas and wherein the circumferential seal is a stuffing box.