Xylem 309200 McDonnell & Miller 11-MV Millivolt Switch

The Xylem 309200 is a McDonnell & Miller Model 11-MV millivolt automatic reset snap switch designed for boiler control systems. This genuine replacement switch is specifically engineered for use with McDonnell & Miller Series 61, 64, 67, 69, 70, 764, and 767 low water cut-off and float controls.

Key Features:

• Two-pole double break switch design for reliable low water cut-off protection
• Automatic reset functionality for continuous operation
• Millivolt service compatibility for gas valve systems
• Genuine McDonnell & Miller replacement component
• Includes switch mechanism and mounting hardware
• Made in the United States

McDonnell & Miller, a trusted Xylem brand, has been a leader in manufacturing boiler controls, liquid level controls, and low-water cutoffs for steam and hot water boilers in industrial, commercial, and building applications. This millivolt switch ensures safe and reliable boiler operation by providing critical low water protection in millivolt-controlled systems.