Filtration & Monitoring Solutions for hydraulic oil and lubricants

By-pass Units

The RMF By-Pass Units are especially designed for mobile application in hydraulic and/or transmission systems.

The By-pass filter comes equipped with an integrated pressure compensated flow control valve. This valve bleeds oil from the main hydraulic system, passes this through the filter after which it is returned to the hydraulic reservoir. The amount of oil extracted from the main system at any time is insignificant ensuring that it will not affect the working of the main system. Most commonly used biodegradable oils in the mobile sector are suitable for filtration with RMF filter elements.


RMF By-pass filter units can be fitted to every imaginable mobile application where hydraulic and/or transmission systems are present. Installation is very simple, the filter housing provides mounting slots on all four sides and the pressure and return connections are available on the side and the back of the By-Pass unit. In recent years RMF Systems have developed a great deal of experience in cleaning and keeping clean hydraulic and transmission systems on: excavators, wheel loaders, forestry machines, asphalt machines, concrete pumps, aviation ground support equipment and agricultural machines.


  • Extremely clean oil due to high filtration efficiency.
  • Prevention of channel forming by radial filtration direction.
  • Large dirt and water holding capacity.
  • Compact and easy-maintenance design.
  • Environmentally friendly elements available.
  • Longer usage life for oil and components.
  • Reduces cost of ownership.

Filter Systems

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