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Piston Accumulators Parker's hydraulic accumulators for industrial and mobile applications provide a means of regulating the performance of a hydraulic system. They are suitable for storing energy under pressure, absorbing hydraulic shocks and damping pump pulsation and flow fluctuations. Their simple, compact, design ensures dependable performance, maximum efficiency and long service life.
Parker's piston accumulators are manufactured in compliance with the European Pressure Equipment Directive 97/23/EC (PED) and carry the CE mark where applicable. Other approvals are available on request.
Parker offers the A Series range of piston accumulators for mobile applications such as damping and ride control. For industrial applications, A Series and AP Series accumulators are offered to suit different application and performance criteria.
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Rated to 3000 psi, piston type, designed for long life and easy maintenance.
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Fluids are practically incompressible and cannot therefore store pressure energy. The compressibility of a gas (nitrogen) is utilized in hydropneumatic accumulators for storing fluids. EATON piston accumulators are designed on this principle, using nitrogen as the compressible medium. A piston accumulator consists of a fluid section and a gas section with the piston acting as a gas proof screen. The gas section is precharged with dry nitrogen gas. The fluid section is connected to the hydraulic circuit so that the piston accumulator draws in fluid when the pressure increases thus compressing the gas. When the pressure drops, the compressed gas expands and forces the stored fluid into the circuit.
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The hydro pneumatic piston accumulator, or piston accumulator, is a sort of tank in a hydraulic circuit,
capable of storing a large quantity of energy with a low volume.
A piston accumulator is divided in two chambers: one for the fluid under pressure, the other one for the
nitrogen (or other type of gas). The two chambers are separated from one another by a piston.
In case of peak of pressure in the hydraulic circuit, the fluid pressure is higher than the initial pressure
(called inflation pressure). When the fluid arrives in the piston accumulator, the nitrogen will compress
and will therefore retain the corresponding fluid.
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