McDonnell & Miller 119700 Model FS7-4 – Snap Liquid Flow Switch

McDonnell & Miller model number FS7-4 is a 120 volt, single pole, double throw, snap liquid flow switch for universal industrial large pipe applications such as heating and hydronic systems, air conditioning refrigeration, and process work. This switch features 1-1/4″ MIP in-line connection to be installed into a tee and comes with a paddle for 2″ to 5″ pipe. It is also has a sensitivity adjustment screw for easy flow adjustment, a maximum temperature of 300°F, and a 300 psi operating pressure.