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Bladder Accumulators – Low Pressure


Fluids are practically incompressible and cannot, therefore, store pressure energy. So, the utilisation of compressibility of a gas in hydraulic accumulators is for storing fluids. That’s why HYDAC bases its bladder accumulators on this principle, using nitrogen as the compressible medium.

Indeed, a bladder accumulator consists of a fluid section and a gas section with the bladder acting as the gas-proof screen. Hence, the connection of the fluid around the bladder to the hydraulic circuit results on the bladder accumulator drawing in the fluid. It happens when the pressure increases, leading to the compression of the gas. As a result, when the pressure drops, the compressed gas expands and forces the stored fluid into the circuit.

Moreover, HYDAC bladder accumulators serve in a wide variety of applications, some are on the list below:

  • Energy storage
  • Emergency operation
  • Force equilibrium
  • Leakage compensation
  • Volume compensation
  • Shock absorption
  • Vehicle suspension
  • Pulsation damping
  • See catalog section: Hydraulic Dampers No. 3.701


2127481SB35A-100F7/112F-35 DN100 PN35
2127482SB35A-150F7/112F-35 DN100 PN35
2127483SB35A-200F7/112F-35 DN100 PN35
2127484SB35A-300F7/112F-35 DN100 PN35
2127486SB35A-450F7/112F-35 DN100 PN35
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