McDonnell & Miller model number 6667 is a float head mechanism for model number 61, 67, 69, 70, and 767 controls. Float head mechanisms include everything except a float chamber and head plate. They allow for quick and easy replacement by removing the bolts on the float chamber and then removing and replacing the new unit, with no need to disrupt piping.
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.