This accumulator consists of a seamless high-pressure shell, cylindrical in shape, with domed ends and a synthetic rubber bag that separates the liquid and gas (usually
nitrogen) within the accumulator.
The bag is fully enclosed in the upper end of a shell.
The gas system contains a high-pressure gas valve. The bottom end of the shell is sealed with a special plug assembly containing a liquid port and a safety feature that makes it impossible to disassemble the accumulator with pressure in the system.
The bag is larger at the top and tapers to a smaller diameter at the bottom. As the pump forces liquid into
the accumulator shell, the liquid presses against the bag, reduces its volume, and increases
the pressure, which is then available to do work.