
CS-AL Series Bowey High-Precision Oil Filter Purifier for Hydraulic Lubrication System
Bowey’s CS-AL series oil purifiers feature a refined enclosure covering all components, protecting the equipment from external contamination, making them especially suitable for environments with high cleanliness requirements.
Clean Hydraulic Oil & Protect Your Equipment
A wide range of models are available, spanning from Type 1R to Type 9R. These units are fitted with leakage and overload protection shutdown devices to safeguard the motor, overpressure protection devices for the hydraulic system, as well as oil pumping/filtration switching mechanisms for convenient dual-mode operation between oil pumping and filtration.
In addition, they are equipped with filter element clogging alarm and automatic shutdown functions. The system comprises an independent oil pump, vacuum gauge, pressure gauge, and multiple parallel filter cartridges. A suction-side strainer protects the oil pump and extends the service life of the main filter.
These purifiers continuously remove contaminant particles and moisture from oil, delivering stable purification performance with a filtration accuracy of NAS1638 Class 3.

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