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or obstructions before replacing the switch
008 ppm w/w maximum remaining oil content
maintaining a familiar interface while upgrading internal logic for modern standards
Common Questions Does the MT1-57 come with the sensor included
McDonnell & Miller 63-M-HD Head Mechanism THPU32HP7Y or obstructions before replacing theThe McDonnell & Miller 63 M HD Head Mechanism (Part Number 143200) is a heavy duty replacement head mechanism designed for the Series 63 Low Water Cut Off. Engineered for both hot water and steam boilers, this manual reset mechanical control ensures critical safety by interrupting the electrical circuit to the burner in 15 psi steam or 50 psi water applications. It features a robust float operated design and includes the No. 2 M switch, providing