Automatic Reset Logic: Eliminates manual intervention by restoring the electrical circuit once the gas pressure recovers to safe operating levels

If the actuator won't reach full stroke or you hear audible air bypass at the vent

increased amp draw on the blower motor

this specific part number typically includes a removable bypass plug that can be swapped for a provided orifice for continuous minimum flow

the extended 72-inch length provides the necessary clearance for large-scale equipment footprints

McDonnell & Miller 194-A-7B Controller R-22 Automatic Reset Logic: Eliminates manualThe McDonnell & Miller 194 A 7B (Part Number 167100) is a heavy duty combination low water cut off and pump controller engineered for commercial and industrial steam boiler applications. Designed to handle a maximum pressure of 250 PSI, this unit integrates a high performance potentiometer switch to provide a proportional 135 ohm signal, ensuring a constant water level is maintained regardless of varying steaming rates. As a veteran grade float