Container assembly

A container assembly comprising:

• a regulated tank to contain a fluid;
• a free tank to replenish the fluid in the regulated tank;
• a first expandable member between an interior of the regulated tank and ambient atmospheric pressure;
• a second expandable member between the interior of the regulated tank and an inflation port for a source of pressurized fluid to selectively pressurize the interior of the regulated tank to a pressure above the ambient atmospheric pressure;
• a first valve to selectively connect the free tank to the regulated tank based upon a pressure differential between the interior of the regulated tank and an interior of the free tank;
• a second valve actuatable between an open state permitting an interior of the free tank to be pressurized and a closed state, the second valve actuating between the open state and the closed state based upon a position of the first expandable member;
• a first fluid passage extending from a first ambient atmospheric pressure port to a side of the first expandable member opposite to the interior of the regulated tank;
• a second fluid passage isolated from the first fluid passage and extending from the inflation port to a side of the second expandable member opposite to the interior of the regulated tank;
• and
• a third fluid passage isolated from the first fluid passage and the second fluid passage, the third fluid passage extending from a second ambient atmospheric pressure port to the interior of the free tank, the third fluid passage being selectively opened and closed by the second valve.

A container assembly comprising:

• a regulated tank to contain a fluid;
• a free tank to replenish the fluid in the regulated tank;
• a first expandable member between an interior of the regulated tank ambient atmospheric pressure;
• a second expandable member between the interior of the regulated tank and an inflation port for a source of pressurized fluid to selectively pressurize the interior of the regulated tank to a pressure above the ambient atmospheric pressure;
• a first valve to selectively connect the free tank to the regulated tank based upon a pressure differential between the interior of the regulated tank and an interior of the free tank;
• a second valve actuatable between an open state permitting an interior of the free tank to be pressurized and a closed state, the second valve actuating between the open state and the closed state based upon a position of the first expandable member;
• and
• a labyrinth to fluidly isolate the flow of ambient air to the first expandable member from the flow of a supply of pressurized air through the inflation port.