A fluid delivery system for use with ink jet printers, the system including a chamber housing a fluid suitable for ink jet printing; a conduit having a distal end fluidly connected to the chamber and a proximal end configured for fluid connection to an ink jet cartridge for delivering the fluid to an inkjet printer; and a magnetic valve assembly positioned inline between the opposing ends of the conduit, to regulate flow of the fluid to the proximal end. The magnetic valve assembly operates through magnetic interaction and through the movement of a float and flap.
