McDonnell & Miller 193-A-7B Controller R-22 Precise Calibration: Features a screwdriver

Precise Calibration: Features a screwdriver slot adjustment to prevent unauthorized setpoint tampering

Substantial Capillary Reach: The 36-inch capillary tube provides flexibility for remote mounting in complex control panels

while optimized for water pilot operated service

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

making it a standard fit for many ICP

McDonnell & Miller 193-A-7B Controller R-22 Precise Calibration: Features a screwdriverThe 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