McDonnell & Miller 93-HDLS Head Mechanism Less Switch for Series 93 & 193

The McDonnell & Miller 93-HDLS (Part Number 162402) is a replacement head mechanism designed for use with Series 93 and 193 combination low water cut-off and pump controllers. This component is sold as the head mechanism only, without the electrical switch assembly, allowing for targeted replacement when the mechanical float assembly needs servicing while the existing switch remains functional.

Key Features:

• Replacement head mechanism for McDonnell & Miller Series 93 and 193 controls
• Features magnetic repulsion technology that eliminates the need for bellows
• Designed for commercial and industrial steam boiler applications
• Rated for maximum operating pressure of 150 PSI
• Maintains consistent water level control regardless of boiler pressure
• Compatible with 1-inch NPT pipe connections
• Does not include electrical switch (switch sold separately)

This head mechanism is ideal for maintaining existing McDonnell & Miller low water cut-off systems when only the mechanical float assembly requires replacement. McDonnell & Miller, a Xylem brand, is recognized as an industry leader in boiler control systems and low water safety devices.