Designed for 1-, 1½- and 2-in. pipe systems, FSI-T00 flow sensors are constructed with a high-density polyethylene impeller, Type 1 PVC sensor housing, tungsten carbide impeller shaft and BUNA-N O-ring. They are suited for water treatment systems, water dispensing, cooling loops, irrigation systems, large-scale aquariums and more. They feature a molded mounting tee that provides improved control of dimensions for consistent measurement and improved performance at low flow rates. For easy servicing, they feature a threaded retaining nut instead of a retaining pin.