Flow switch 120 volt, 20 second time delay relay. Direct mounting on series FS4-3, AF2 and AF3. Remote mounting on main control panel or conduit box with series FS-1, FS6, FS7-4 and FS-8W. Permits intermittent switching of controlled equipment and eliminates false signals and rapid cycling from turbulence or fluctuations. Solid state with 10" lead wires.
McDonnell & Miller, a unit of ITT Industries, is a leader in engineering and manufacturing boiler controls, liquid level controls, low-water cutoffs, and flow switches for steam and hot water boilers in industrial, commercial, and building trade applications. McDonnell & Miller specializes particularly in boiler controls and power switches.