Oil Filtration Systems® continues to be the global leader in the level indication and control, sightflow indication, and filtration and separation industries. Clark-Reliance is fully committed and dedicated to providing the lowest “cost-of-ownership”, innovative products and solutions. Oil Filtration Systems® manufactures Oil Purification Equipment designed to remove contamination (water, particulate, varnish, and/or entrained gases) from a wide variety of fluids, including Turbine Oil, Hydraulic Oil, Gear Oil, and Fuel Oil (#2 Diesel Fuel).