Xylem 61-HD Head Mechanism for Series Low Water Cutoff Boiler Safety Controls & Aquastats - 61

The Xylem 61-HD (part number 140300) is a genuine replacement head mechanism designed specifically for the McDonnell & Miller Series 61 low water cutoff systems. This precision-engineered component is an essential replacement part for maintaining the reliable operation of steam boiler low water cutoff protection systems.

Key Features:

• Genuine Xylem-McDonnell & Miller OEM replacement part
• Designed for Series 61 low water cutoff units
• Precision-engineered for exact fit and dependable performance
• Durable construction for long-lasting service life
• Meets or exceeds original equipment specifications

This head mechanism is a critical component in the Series 61 LWCO system, which provides essential protection for residential and commercial low-pressure steam boilers. The Series 61 features dual precision switches for dependable low water cut-off and alarm or electric water feeder operation, with a maximum steam pressure rating of 20 PSI and 1-inch NPT connections.

Application: Replacement part for McDonnell & Miller Series 61 low water cutoff controls used in steam boiler applications.