Bladder accumulators
Bladder accumulators

Bladder accumulator

... are hydropneumatic accumulators with a flexible bladder as a separation element between a compressible gas cushion and the operating fluid.
HYDAC bladder accumulators are comprised of either a welded or a forged pressure vessel, the accumulator bladder and the armatures for the gas-side and fluid-side connection.
In addition to the standard construction design, custom designs for special application cases are also available, in particular for very high discharge velocities (e.g. up to 100 l/s) and pressures (e.g. up to 1,000 bar).

Essential specifications are:

  • Nominal volume: 0.5 ... 450 l,
  • Permitted operating pressure: up to 1,000 bar
  • Standard elastomers: NBR, ECO, IIR, FKM (FPM).
  • Accumulator shell materials: carbon steel, stainless steel, aluminium.

The following advantages set HYDAC bladder accumulators apart:

  • high discharge speeds,
  • no pressure differential between fluid side and gas side,
  • compact, low-maintenance
  • High charging and discharge frequencies.
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