Liquid flow switch for universal general purpose applications for starting and stopping electrical operation equipment such as signals, alarms, motors, automatic burners and metering devices. 1" male I.P to be installed into a tee and comes with a reinforced, 1", 2", 3" and 6" paddles. 120 volt single pole double throw snap switch. Sensitivity adjustment screw for easy flow adjustment. Maximum temperature 300 degrees F, and 150 psi operating pressure.