Profile: Keller Products, Inc. is a supplier of engineered filtration products for the industrial market. Our cartridge filters utilize the unique Keller plastic stacked disc washable filter element. We specialize in filtration of cooling water, municipal water supplies, and pond and well water. Our oil separating element provides extraordinary surface area in a small package, providing excellent oil splitting in a compact design. We eliminate the numerous operating and reliability problems associated with electrical pumps or smaller air diaphragm pumps. Our separator is supplied with three inlet devices which can access the surface of any sump through an opening as small as 3" diameter. The self-priming air operated pump pulls the tramp oil/coolant mixture from the surface of the sump via the inlet device, then through a high capacity bag filter, which removes chips from the fluid. In this, an inlet device draws in oily coolant from the surface of the sump while avoiding the intake of air, which can interfere with splitting of oil from coolant in the separator tank. One inlet device is used in each sump. Our pump/separator units separate suspended oil from a hot parts-washer water and return the cleaned water to the feed tank at a high flow rate. Oily water is pumped from the surface of the tank through a fixed inlet device or floating inlet device.