Patent ID: 6840272
Filing Date: 2005-01-11
Classification: B01D,F16K,Y10T

Abstract:
1. A fuel-conditioning device for conditioning a fuel, comprising: a housing defining an inlet, an outlet, a first passageway, and a second passageway, wherein the first passageway and second passageway are downstream of the inlet and upstream of the outlet, relative to the fuel flowing from the inlet to the outlet; a first cartridge removably attached to the housing; a first fuel-conditioning element attached to the first cartridge and disposed in the first passageway; a second cartridge removably attached to the housing; a second fuel-conditioning element attached to the second cartridge and disposed in the second passageway; a first valve seat interposed between the inlet and the first passageway; a second valve seat interposed between the inlet and the second passageway; a valve plug disposed in the inlet of the housing and being selectively movable to a first location and a second location, such that in the first location the valve plug disengages the first valve seat to place the inlet in fluid communication with the first fuel-conditioning element in the first passageway, and in the second location the valve plug disengages the second valve seat to place the inlet in fluid communication with the second fuel-conditioning element in the second passageway; a first marking adjacent the first fuel-conditioning element; a second marking adjacent the second fuel-conditioning element; a valve operator connected to the housing and the valve plug, wherein the valve operator is movable relative to the housing between a first position and a second position to selective move the valve plug between the first location and the second location, respectively; a first mark disposed on the valve operator and corresponding to the first marking adjacent the first fuel-conditioning element; and a second mark disposed on the valve operator and corresponding to the second marking adjacent the second fuel-conditioning element, wherein the housing covers the second mark when the valve operator is in the first position, thereby indicating the inlet is in fluid communication with the first fuel-conditioning element in the first passageway, and wherein the housing uncovers the second mark when the valve operator is in the second position, thereby indicating the inlet is in fluid communication with the second fuel-conditioning element in the second passageway.