Xylem 6667 Head Mechanism for Series 67 Low Water Cut-Off

The Xylem 6667 (part number 153825) is a replacement head mechanism designed for McDonnell & Miller low water cut-offs. This complete assembly includes the gasket, float and bellows assembly, and switch components needed for proper operation.

Compatible Models:

• Series 61 low water cut-offs
• Series 67 low water cut-offs
• Series 69 low water cut-offs
• Series 767 low water cut-offs

This head mechanism is a genuine OEM replacement part from McDonnell & Miller, a trusted Xylem brand specializing in boiler controls and low water cut-off systems. The assembly provides reliable water level monitoring and safety protection for steam and hot water boilers in commercial and industrial applications.

What's Included:

• Head gasket
• Float and bellows assembly
• Switch mechanism
• Mounting bolts

The head mechanism insert is engineered to maintain the safety and reliability of your boiler system by ensuring accurate water level detection and automatic shutdown when water levels drop below safe operating thresholds.