This specific model is calibrated for a 35-60 PSI operational range

Skin oils can create hot spots on the ceramic element

Operating on a 55 to 85

making it ideal for industrial steam management applications where maintaining system vacuum and preventing live steam loss are critical

McDonnell & Miller 193-A Controller THPU32HP7Y This specific model is calibratedThe McDonnell & Miller 193 A is a heavy duty combination low water cut off and pump controller engineered for commercial steam boiler applications. Designed for boilers with a maximum pressure of 150 PSI, this unit features dual snap acting SPDT switches for precise burner control and pump activation. The 193 A model utilizes alternate tappings to simplify installation on various boiler configurations. Its rugged float operated mechanism ensures