RFA Series Tank Mounted Direct Return Line Filter With Glass Fiber Filter Element

A: RFA series direct return oil filter is installed on the top of hydraulic oil tanks, used for fine filtration of return oil in hydraulic systems. It intercepts metal abrasive particles from component wear, rubber debris from sealing elements and other pollutants to keep circulating oil clean.

1. Compact Tank-top Installation, Simplified Pipeline

Mounted directly on the oil tank cover plate, filter head exposed outside the tank, return cylinder immersed in oil. Inlet supports tubular and flange connection types, eliminating redundant pipeline fittings to make system layout neater and installation faster.

2. Clogging Alarm Transmitter + Emergency Bypass Valve

When filter clogging or low oil temperature/flow fluctuation causes inlet pressure to reach 0.35MPa, the pollution transmitter triggers an alarm signal to remind users to replace filter elements or adjust oil temperature promptly.

If equipment cannot stop running for maintenance, the bottom bypass valve automatically opens at 0.4MPa opening pressure, to protect the filter and entire hydraulic system from overload damage.

3. User-friendly Direct Return Design for Maintenance & Oil Filling

Only unscrew the top filter cover to complete filter element replacement or refuel the tank conveniently. Two M18×1.5 auxiliary oil ports are reserved on the filter head, available for mounting transmitters or diverting small-volume system return oil for secondary filtration.

4. High-performance Glass Fiber Filter Cartridge

Advantages: High absolute filtration precision, large dirt holding capacity, big flow throughput, low initial pressure drop.

Standard filtration ratios: β3, β5, β10, β20>100

Filtration efficiency ≥99%, fully compliant with international ISO filtration standards.

General Industrial Hydraulic Stations & CNC Machine Tools Automated production lines, machining centers, punch presses; continuously purifies return oil to protect precision servo valves and hydraulic cylinders, extend component service life.

Injection Molding & Rubber Extrusion Equipment Plastic molding machines, die-casting machinery; filters wear debris generated by high-frequency mold reciprocation, stabilize molding precision.

Metallurgy & Heavy Hydraulic Presses Hot rolling mills, forging equipment, heavy hydraulic presses; bypass valve design guarantees non-stop production safety for continuous operation workshops.

Construction & Port Mobile Machinery Excavators, loaders, container gantry cranes; tank-top integrated design saves installation space, convenient for on-site field maintenance.

Wind Power & Power Generation Auxiliary Hydraulic Systems Wind turbine gearbox hydraulic stations, thermal power auxiliary equipment; clogging early warning function realizes predictive maintenance, reduces unexpected shutdown losses.

Agricultural Machinery & Light Industrial Equipment Large harvesters, textile hydraulic looms; low pressure loss ensures stable oil circulation under long-term light/medium load operation.

OEM, OEM Production services. Independent R&D team, one-stop solution for cleanroom projects.

If you also have business in hospitals or clean rooms, you can take a look at these products.

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