McDonnell & Miller 193-A-7B Controller R-22 Lockout models shut down the

Lockout models shut down the system after a set number of failed attempts for safety in specific environments

Multi-Voltage Compatibility: Operates efficiently at both 208V and 230V

this unit converts line voltage to a stabilized 24 VAC output

Always check the primary voltage matching before energizing

McDonnell & Miller 193-A-7B Controller R-22 Lockout models shut down theThe McDonnell & Miller 193 A 7B (Part Number 164500) is a robust, float operated combination low water cut off and pump controller specifically engineered for commercial and industrial steam boiler applications. Designed to handle a maximum pressure of 150 PSI, this unit integrates a No. 7B potentiometer switch, which provides a 135 ohm proportional control signal to maintain a constant boiler water level by modulating the feed valve. Unlike standard