Xylem Head Mechanism for Series Low Water Cut-Off

Xylem McDonnell & Miller replacement head mechanisms are made for float-type low water cut-offs and combination low water cut-off/pump controllers used on steam and hot water boilers. If your low water cut-off controller needs service, a replacement head mechanism, also called a head assembly or replacement control head, restores the unit without a full replacement.

Key Features:

• Replacement head mechanism for McDonnell & Miller float-type low water cut-off series
• Head mechanisms include everything except the float chamber. This allows replacement without disturbing the boiler piping
• Snap-action switch designs provide positive switching for burner cut-off and, on combination models, pump control
• Automatic-reset and manual-reset versions are available across the line
• Float-operated design for water level sensing in residential, commercial and industrial boiler applications
• Made by McDonnell & Miller, a Xylem brand with a long history in boiler controls, liquid level controls, low-water cutoffs and flow switches

Replacing the head mechanism is a practical way to keep a low water cut-off working reliably. It helps protect the boiler from dry-fire conditions. Each head mechanism is matched to a specific McDonnell & Miller series, so choose the part number that corresponds to your control.