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Hydraulic
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Products
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Fluid
Power Equipment
Bag-Type Accumulator. This accumulator (illustrated below)
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.
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