The Piston Accumulators are primarily high-quality cylinder tubes with the internal surface machined to a superfine grade. An internally mounted piston that moves freely along the tube length separates the gas and fluid chambers. The gas section is pre-charged with inert gas (mostly nitrogen).
The fluid under pressure enters into the accumulator through the fluid port and compresses the inert gas stored in the other side. When the line pressure drops, the compressed gas expands and forces the stored fluid back into the circuit.
Other Specifications of Piston Accumulators
- Very high compression ratio
- Mounting position variable.
- Provides large effective volumes
- Available in Variable diameters and volumes
- Piston position measurement/indication possible using specific position measurement devices.

Specifications of Piston Accumulators
- Pressure : 50 …… 750 bar.
- Nominal Volume : 0.2 …. 3300 litres
- Temperature range : -10 °C ... +80 °C
- Material of Construction
- Accumulator shell – Aluminium, Carbon steel, SS. - Seals material - Perbunan (NBR), Butyl (IIR), Viton (FPM) Ethylene oxide (ECO) - Piston Diameter : 40 mm …… 490 mm
- Certification : Mfg. factory Standard, CE PED 97/23/EC etc
Advantages and benefits of piston accumulators
- Adaptation to high temperatures
- Adaptable in transfer systems
- Piston position indicator possible
- High compression ratios
- Customised capacities
- Particularly suitable for backup configurations
We also provide Piston Type Accumulators for various applications requiring high efficiency and reliability. If you're looking for a specific model, we offer Parker Piston Accumulators known for their high-quality construction and robust performance.
Additionally, our offerings include Hydac Piston Accumulators that provide reliable and durable solutions for demanding applications. You can refer to our Hydac Accumulator Catalogue for more detailed specifications and options available.
Please call on us to assist you with your requirements for Piston Accumulators – we’ll be delighted to help and assist!