The Return Filter is an essential part of any hydraulic system. In many instances, it is the only “system protection” provided and therefore must be carefully chosen to ensure maximum system efficiency and should be sized for the maximum flow of the hydraulic system.

With their advanced production technology UFI Return Filters play a critical role in your system by ensuring that the fluid is kept free from solid contaminants, generated by deterioration of system components, that enter the oil reservoir and ultimately return to the system through the suction lines.

Contamination introduced through complete component failure or repairs made to system piping or flexible lines will be efficiently removed by UFI Return Filter, that guarantee clean fluid being returned to your tank and further extend your system and fluid life.

With the inclusion of UFI bypass valve, UFI Return Filters can tolerate wide flow variations without damage or element collapse. This permits more system efficiency and lower costs. UFI bypass valves are manufactured with large flow passages that provide low flow differentials and offer maximum protection to system, filter and element in the event of high flow surges. These high flow surges will allow contaminated fluid into the tank and should be avoided by correct sizing of the filter taking all operating parameters into account.

To avoid “foaming” in the reservoir, the return flow-pipe must be located below the liquid level in the tank. As a general “rule of thumb,” the distance between the bottom of the reservoir-tank and the end of the return-pipe should be more than 2 to 3 times larger than the pipe diameter.

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