EF 25~120 Breather Filter Series: Clean Air, Extended Lifespan
The EF 25~120 Breather Filter Series is a critical component in hydraulic systems, meeting both air and oil filtration needs. Mounting directly on the reservoir cap, it actively manages air exchange during oil level fluctuations. When the hydraulic system is operating, rising oil levels expel internal air, and falling oil levels draw in outside air. The breather filter intercepts airborne contaminants during the intake process, preventing impurities from entering the system. Dual functionality extends to oil filling operations, acting as a barrier to prevent particle intrusion during fluid replenishment. Seamless integration of air and oil purification maintains the integrity of the hydraulic fluid, protecting sensitive components from wear damage.
Made from precision-engineered sintered copper powder, the filter elements combine structural robustness with consistent filtration efficiency. The material's high temperature resistance ensures reliable performance under demanding operating conditions, resisting deformation or degradation. Unlike conventional filters, the sintered design creates a maze-like pathway for fluid and air, capturing particles as small as 25 microns without compromising airflow. The balance of filtration accuracy and breathability prevents pressure imbalance within the tank, effectively solving a common problem in poorly ventilated systems. By maintaining optimal internal conditions, breather filters reduce wear on pumps, valves, and actuators.
Our breather filters provide active contamination control that can be beneficial in hydraulic systems. The external environment often carries dust, moisture and debris that can accelerate component corrosion and fluid breakdown. EF Series breather filters protect against these threats by filtering incoming air to 99% purity, effectively isolating the reservoir from external contaminants. During oil changes or refueling, the filtration mechanism purifies the new fluid entering the reservoir. Dual-phase protection eliminates the risk of cross-contamination and ensures only clean oil circulates in the system, reducing maintenance frequency and the likelihood of unplanned downtime.
The breather filter's pressure balancing feature further improves operating efficiency. The filter's optimized airflow design allows for rapid pressure stabilization without compromising filtration quality, and by maintaining balance, the breather filter prevents oil leaks, reduces stress on auxiliary components, and contributes to a smoother running system.
Our EF 25~120 breather filter series is built for long-term reliability. The corrosion-resistant housing and replaceable filter element simplify maintenance and minimize lifecycle costs. Breather filters are compatible with mineral-based and synthetic hydraulic fluids to suit a variety of industrial environments.










