McDonnell & Miller 114780 Model FS5-1″ – Snap Liquid Flow Switch
McDonnell & Miller model number FS5-1″ is a 120 volt, single pole, double throw, snap liquid flow switch for general purpose applications requiring low flow rate sensitivity. This switch features 1″ FIP in-line connection. It is also has a sensitivity adjustment screw for easy flow adjustment, a maximum temperature of 250°F, and a 150 psi operating pressure.