Founded in 1980, Filtration Systems manufactures air, oil, fuel and process filters at it's 60,000 sq. ft. facility, located ... in Waukesha, WI. We specialize in filtration products for the Energy Sector, primarily diesel, gas-fired reciprocating engines, gas turbines, compressors and natural gas processing plants. Filtration Systems has broadened its product line over the years; so that now it can supply virtually every filter used at a compressor station, gas plant or wellhead gas-gathering application. read more