SOG-913K1B3 liquid purification unit is intended for purification of motor oil and diesel fuel (summer variation) from mechanical contaminants and non-solute water, i.e. substances with density greater than density of purified liquid. This modification of liquid purification unit has an explosion-proof electrical equipment and can be installed in rooms with explosion hazard class of B-Ia storing explosive mixtures classified as categories I and IIa.

The unit can be used to maintain the purity of liquids used in production, repair and technical maintenance of aircraft vessels, gas pumping equipment, road construction vehicles, engines, processing units, technological and other equipment. This can improve the stability and longevity of hydraulic lubrication systems and aggregates as well as the quality of processed surface; it also can lead to increased service period for hydraulic fluids and oil, thus reducing environmental impact from the equipment.