Storage tank with pressure actuated fill termination assembly

A cryogenic liquid storage tank, comprising:

• a vessel for containing a cryogenic liquid;
• a fill pipe in communication with the vessel wherein the vessel is filled with the cryogenic liquid via the fill pipe;
• a fill termination assembly associated with the fill pipe, the fill termination assembly including a valve having an open position for allowing cryogenic liquid to flow through the fill pipe during filing of the vessel and a closed position for preventing cryogenic liquid from flowing through the fill pipe when the vessel has been filled with a selected amount of cryogenic liquid;
• the fill termination assembly including a chamber containing a gas, the chamber having a movable segment and static segment, wherein the static segment extends at least partially into the vessel;
• a lever having a first end, a second end and a pivot point between the first and second ends of the lever, the movable segment of the chamber attached to the first end of the lever and the valve attached to the second end of the lever;
• and
• wherein when gas within the chamber decreases to a threshold pressure, the movable segment of the chamber pulls on the first end of the lever so that the lever pivots about the pivot point and the second end of the lever pushes valve to the closed position.