Compact flow switch for liquid media DTT31 | Endress+Hauser
Flow Control Switch,HT-800 G1 Thread 220V Water Pump Flow Sensor Automatic Control Switch, Water Flow Switch,with Water Flow Magnetic Control Device and On-Off Control Sensing Elements: Amazon.com: Industrial & Scientific
McDonnell & Miller Series FS7-4W Industrial Liquid Flow Switches | Xylem US