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RFB Series Low-Maintenance Hydraulic Filter Self-Sealing for Tank Mounting

Jan 30, 2026 Leave a message

RFB Series Low-Maintenance Hydraulic Filter Self-Sealing for Tank Mounting

 

What Is A Direct Back Self Sealing Return Filter?

 

A: The RFB Series Direct Back Self Sealing Return Filter is a high-performance hydraulic filtration device designed for the fine filtration of return oil in hydraulic systems. It integrates magnetic particle capture, self-sealing maintenance, and system protection features to ensure clean oil and reliable operation of hydraulic components.

 

                

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Performance and Characteristics

 

Core Advantages

 

 

 

Dual Filtration Efficiency: Combines mechanical filtration with a built-in permanent magnet to capture ferrous particles ≥1μm, effectively removing metal wear debris and rubber contaminants from return oil.

Self-Sealing Maintenance: When replacing the filter element, the check valve prevents oil from flowing out of the tank, eliminating the need to drain the system and reducing maintenance downtime.

Integrated System Protection: Equipped with a bypass valve that automatically opens at 0.4MPa pressure differential, protecting the filter and system during cold start-ups or when the element is clogged.

Smooth Oil Return: A liquid flow diffuser ensures stable, bubble-free oil return, reducing air re-entry and preventing recontamination of the oil tank.

Condition Monitoring: Features a visual sight gauge and electrical signal transmission (triggered at 0.35MPa) to monitor filter clogging, with an overflow pipe and pollution accumulation cup to collect contaminants.

Flexible Installation: Can be mounted on the top, side, or bottom of the oil tank, with a flange connection for easy installation and filter element replacement.

 

 

Function & Application

 

 

 

It is primarily used for:

Hydraulic System Protection: Filtering return oil to remove metal particles and rubber contaminants, protecting pumps, valves, and other critical components from wear and damage.

Oil Cleanliness Maintenance: Ensuring oil returning to the tank remains clean, extending oil service life and reducing system downtime.

Industrial Hydraulic Equipment: Ideal for machine tools, construction machinery, and other hydraulic systems requiring reliable return oil filtration.

 

 

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Customized product display

 

 

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

 

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Related Products

 

 

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

 

Primary Efficiency Universal Plate Air Filter (G1-G4 Low Resistance & High Efficiency Type)    PPS/PTFE High-Temperature Resistant Chemical Fiber Needle-Punched Filter Material Precision Direct Back Hydraulic Return Line Oil Filter

 

 

 

 

 

 

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