
McDonnell & Miller 153900 Model 69 - Low Water Cut-Off
McDonnell & Miller model number 69 is a float-operated low water cut-off for mounting into 2-1/2" steam boiler side tappings. This control features dual 120 volt switches for low water cut-off and alarm or electric water feeders. Its maximum pressure is 20 psi and has an insertion length of 4-1/8".