Rain Bird 1 1/2" Ultrasonic Flow Sensor, NPT

The Ultrasonic Flow Sensors use ultrasonic waves to sense flow rate, as opposed to the impeller (paddle wheel) design of traditional flow sensors. This enables the Ultrasonic Flow Sensors to read a wider flow range, eliminates the typical straight-pipe requirements of standard flow sensors, and allows the sensor to remain installed during winterization with pressurized air blowout.