Piston Accumulators – Series SK280


Fluids are practically incompressible and cannot, therefore, store pressure energy. The compressibility of a gas (nitrogen) is utilised in hydraulic accumulators for storing fluids. HYDAC piston accumulators are based on this principle.

A piston accumulator consists of a fluid section and a gas section with the piston acting as the gas-proof screen. The gas section is pre-charged with nitrogen.

The fluid section is connected to the hydraulic circuit so that the piston accumulator draws in the fluid when the pressure increases and the gas are compressed.

When the pressure drops, the compressed gas expands and forces the stored fluid into the circuit.


  • Optimised production process, saving on material and manufacturing costs
  • Reduced-weight series
  • Reduced installation space
  • Standard gas valve M28x1.5 integrated into end cap (non-refillable version possible)
  • Endurance tested (function and fatigue tests)


Contact us for more information on this product

HYDAC Australia

HYDAC New Zealand

AUSTRALIA 1300 449 322

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