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HYDAC’s OXiStop is a tank solution for hydraulic systems with integration of hydraulically driven degassing and dewatering unit.

An integrated membrane prevents direct contact with the ambient air. This means that the tank can be for the differential operating volume actually needed, reducing its size. So, the pump flow rate is not important for the tank design.

The fluid reaches a very low gas and water content. Indeed, thanks to the membrane, which keeps the fluid “vacuum packed”, it is also possible to install the OXiStop in extremely dusty or humid environments.

Moreover, HYDAC offers three standard sizes for a differential operating volume up to 70 litres. Additionally, realisation of customer specific solutions is possible.

The OXiStop can be equipped with an optional return line filter, water/oil cooler as well as with the AquaSensor AS and the ContaminationSensor CS.


  • Oil volume reduction typically by a factor of 10
  • Increased oil service life due to – 80 % less oxygen content and – reduced contamination ingression (solid, liquid, gaseous) because of closed system by membrane
  • Reduced noise due to reduced cavitation by continuous degassing


Contact us for more information on this product

HYDAC Australia

HYDAC New Zealand

AUSTRALIA 1300 449 322

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