Browse top-quality gas filters and strainers at F.W. Webb. Use a propane strainer in an industrial or commercial application to remove impurities and pollutants from liquid or gas to protect the equipment from damage caused by circulating debris. Made in sturdy ductile iron or cast aluminum, these filters are built to withstand daily use in a new or existing system. Browse the selection of gas filters and strainers from trusted makers Maxitrol to find the right fit for your propane application.