Technology

Why Piston Accumulator

There are three different accumulator technologies commonly used. These are membrane, bladder and piston accumulators.

Each type of accumulator has advantages and limitations that must be considered. When choosing your accumulators, you should take into consideration such factors as response time, system speed, mounting orientation, fluid type, pressure, temperature, diagnostic characteristics, maintenance and service intervals as well as costs for servicing and downtime.

KEY ADVANTAGES

  • HIGHEST FLOW RATE
  • LOWEST GAS PERMEATION
  • OPTIMIZATION FOR SYSTEM REQUIREMENTS
  • FLEXIBLE MOUNTING POSITION
FEATURE / TYPE OF ACCUMULATORPISTONBLADDERMEMBRANE
Oil flow rateHighLowMedium
Compression ratio10:14:16:1
Horizontal mounting positionYesNoMedium
Size optimization for system requirementsYesNoNo
Space requirementSmallLargeMedium
Sensoring ( e.g. pressure and
piston position monitoring)
YesNoNo
Tolerance of low temperature- 45°C- 25°C- 25°C
Extra gas tank connectionYesYesNo
Dual functionality (dual piston or gas chamber)YesNoNo
Gas permeation (loss off pre-charge pressure)Very lowHighHigh
Service intervalLongShortShort
Response timeMediumMediumHigh
Tolerance for dirtLowHighMedium
Pre-charge lost in case of failureGradualImmediateImmediate