System and method for filtration of industrial and mobile fluids

A filtration system comprising:

• a variable speed pump having a direct current motor and comprising an input adapted to communicate with a source of fluid to be filtered, wherein the direct current motor comprises a brushless motor and wherein said variable speed pump is magnetically driven by the direct current motor, whereby no driveshaft or transmission is employed;
• a filter assembly having an input in communication with an output of said variable speed pump and an output in communication with the source of fluid;
• wherein the source of fluid, said variable speed pump and said filter assembly define a kidney-loop filtration circuit in which the fluid is circulated and filtered, wherein the fluid to be filtered is an industrial or mobile fluid comprising at least one of a hydraulic fluid, a lubricating fluid and a liquid fuel and wherein said filter assembly reduces at least one of particle contamination and water from the fluid to be filtered;
• a filter head on which said variable speed pump is mounted, said filter head having an inlet port in communication with said variable speed pump, a filter connection adapted to receive said filter assembly and an outlet port in communication with the source of fluid, wherein said filter assembly comprises a spin-on filter having a threaded connection adapted to engage the filter connection;
• at least one threaded adaptor disposed between the threaded connection of the spin-on filter and the filter connection of said filter head;
• and
• a control circuit in communication with a direct current power supply and with the direct current motor of said variable speed pump, said control circuit varying a voltage received from the direct current power supply and supplying the varied voltage to the direct current motor such that the speed of the direct current motor is variable and consequently the flow of fluid through said variable speed pump and through said filter assembly is variable between 0.05 gpm and 0.45 gpm and wherein the direct current motor draws current and produces an output of less than 0.10 hp.