Abstract: A top loading filter assembly comprising a fuel return tube displacement subassembly which is received by a mount and which is in operable communication with a filter controller having a center manifold. The subassembly comprises a fuel return tube disposed within a chamber of a manifold, and which moves in a linear direction within the chamber by a rack-and-gear mechanism. The fuel return tube is retracted and cleared from the center manifold to allow for the upward removal of the manifold from the center manifold. The manifold holds a filter cartridge; therefore, removal of the manifold via the retraction of the fuel return tube allows for the accompanying removal of the filter cartridge from the assembly. The assembly may comprise one or more fuel return tube displacement subassemblies.

Abstract: A filter controller which comprises a manifold and at least one filter assembly. The manifold comprises a plurality of portholes and channels into and through which a fluid, such as, e.g., a fuel, may flow. The filter assembly comprises an upper filter subassembly and a lower filter subassembly. The filter assembly can be fitted directly onto the manifold without the use of pipes and fittings and such that the filter assembly is in fluid communication with the portholes and channels necessary for effective filtering, polishing, and flow of the fluid through the system and through the assembly into which the system is integrated.

Abstract: A multiple filter controller for monitoring two or more filters to detect when any of the filters is malfunctioning and for polishing a fluid, wherein the multiple filter controller comprises a first filter; a second filter; an inlet valve, wherein the inlet valve provides the fluid to the first filter and to the second filter wherein the fluid originates from a supply station; an outlet valve, wherein the outlet valve provides an outlet source for the fluid from the first filter and from the second filter; a bleed valve located downstream of the outlet valve; and a first conduit in communication with the bleed valve and with the supply station, wherein the fluid passes into the multiple filter controller via the inlet valve, and wherein the fluid is returned to the supply station by feeding the fluid into the first conduit via the bleed valve.

Abstract: A method for maintaining an efficiently working fuel system comprising: passing the fuel through a first filter of a multiple filter controller; monitoring a level of pressure established within the multiple filter controller as the fuel passes through the first filter, wherein monitoring comprises providing a pressure gage; detecting when the level of pressure has reached a predetermined level, wherein such detecting comprises providing a vacuum switch; redirecting the fuel from the first filter to a second filter when the predetermined level of pressure has been detected, wherein redirecting comprises manipulating an inlet valve of the multiple filter controller such that the inlet valve stops the flow of the fluid to the first filter and redirects the flow of the fluid to a second filter; and repairing or removing the first filter from the fuel system while the fuel is simultaneously flowing through the second filter.

Abstract: A method for maintaining an efficiently working fuel system comprising: passing the fuel through a first filter of a multiple filter controller; monitoring a level of pressure established s within the multiple filter controller as the fuel passes through the first filter, wherein monitoring comprises providing a pressure gage; detecting when the level of pressure has reached a predetermined level, wherein such detecting comprises providing a vacuum switch; redirecting the fuel from the first filter to a second filter when the predetermined level of pressure has been detected, wherein redirecting comprises manipulating an inlet valve of the multiple filter controller such that the inlet valve stops the flow of the fluid to the first filter and redirects the flow of the fluid to a second filter; and repairing or removing the first filter from the fuel system while the fuel is simultaneously flowing through the second filter.

Abstract: Disclosed herein is multiple filter controller comprising two filters; an inlet valve that regulates the directional inflow of a fluid through the filters; and an outlet valve that regulates the directional outflow of the fluid from the filters. Further disclosed is a method for maintaining a working fuel system comprising: passing the fuel through a first filter; monitoring an amount of pressure as the fuel passes through the first filter; detecting when the pressure has reached a predetermined level; redirecting the fuel from the first filter to a second filter when the predetermined level has been detected by manipulating an inlet valve such that the inlet valve stops the flow of the fluid to the first filter and redirects the flow of the fluid to a second filter; and repairing or removing the first filter from the fuel system while the fuel is simultaneously flowing through the second filter.