1. Overview
The DF series filters are high-performance industrial filtration devices designed for hydraulic, lubrication, and process fluid systems. These filters are engineered to remove contaminants such as solid particles, water, and oil from fluids, ensuring the cleanliness and reliability of critical equipment.
2. Key Features
Robust Construction: The filter housing is typically made of cast iron or carbon steel, with a modular design comprising an upper cover and a screw-in filter cartridge. This structure supports bidirectional fluid flow and high-pressure applications, with some models offering a split-body design for high-flow rates (above 990 L/min).
High-Efficiency Filtration: The filter elements, often made of glass fiber and stainless steel wire mesh, offer filtration ratings from 3 to 200 μm, with a filtration ratio (βx) ≥ 200, ensuring effective removal of contaminants and extending the service life of hydraulic components.
Clogging Indicator: Equipped with a clogging indicator interface, the filter can be integrated with optional visual or electrical clogging indicators to alert operators when the filter element is clogged, enabling timely replacement.
Safety Features: Models with bypass valves (e.g., DF ON 240 and above) prevent system pressure buildup during filter blockage. The housing includes a pressure relief plug for safety, and some models feature a drain plug for easy maintenance.
Compliance with Standards: The filter elements undergo rigorous testing according to ISO 2941 (burst resistance), ISO 2942 (structural integrity), ISO 2943 (material compatibility), ISO 3724 (flow fatigue), ISO 3968 (pressure drop), ISO 11170 (efficiency), and ISO 16889 (multi-pass performance).
3. Applications
Hydraulic Systems: Used in construction machinery, forklifts, industrial robots, and mining equipment.
Lubrication Systems: Protects gearboxes, bearings, and engines in wind turbines, steel mills, and petrochemical plants.
Process Fluid Systems: Applied in chemical processing, power generation, and marine engineering.