McDonnell & Miller 150S-HD Low Water Cut-Off/Pump Controller Head Mechanism

The 150S-HD Low Water Cut-Off/Pump Controller Head Mechanism from McDonnell & Miller delivers dependable boiler safety by integrating a low-water cutoff with a pump controller. As a Type Head Mechanism, it is designed for reliable operation in the 150S Series Low Water Cut-Off/Pump Controller systems.

Used On 150S Series Low Water Cut-Off/Pump Controller, this head mechanism serves as a reliable replacement part for McDonnell & Miller systems, helping maintain essential low-water safety functions, protecting boilers from damage, and ensuring consistent pump operation.

Designed to fit within the existing control head assemblies, the 150S-HD Head Mechanism supports accurate sensing and seamless integration with the 150S series’ control logic.

• Type: Head Mechanism
• Compatibility: 150S Series Low Water Cut-Off/Pump Controller
• Function: Provides head mechanism integration for low-water cutoff and pump control
• Replacement Part: Direct replacement for McDonnell & Miller 150S systems
• Installation: Designed to fit the 150S family control heads

In operation, this head mechanism helps maintain safe boiler conditions by ensuring timely activation of the low-water cutoff and the pump controller within the 150S series.