Filter Sciences

Filter Sciences (FSI) is a U.S.-based manufacturer that specializes exclusively in stainless steel liquid bag filter housings, operating for over 35 years in the filtration industry. The company maintains what it describes as the largest inventory of stainless steel filter pods in the United States, stocking both 304 and 316 stainless steel models with flow capacities from 200 to 20,000 GPM, and offers next business day shipping on in-stock units. FSI's core value proposition is selling stainless steel housings at carbon steel pricing through lean manufacturing. The product line includes single bag filter housings rated up to 250 GPM per unit at 150 or 300 PSI, multi-bag housings ranging from 4-bag (800 GPM) through 12-bag (2,400 GPM) and custom configurations up to 23+ cells, mobile bag filter pod trailers for temporary or field filtration, and duplex configurations for continuous operation during bag changes. All housings are NSF/ANSI 61 certified for potable water contact, with filtration capability down to 1 micron depending on bag media selection. FSI has delivered custom systems for high-profile clients including a twin 25-pod, 12-inch all-304 stainless trailer for Tesla and emergency filtration delivery for the U.S. Navy's USS Monterey within 24 hours. The company serves water treatment, oil and gas, food and beverage, metalworking, pharmaceutical, chemical processing, data center cooling, and military and defense markets.