McDonnell & Miller

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McDonnell & Miller specializes in manufacturing water level controls and flow switches for boilers and steam systems. They offer a wide range of products designed to ensure proper operation and safety in commercial and industrial applications. McDonnell & Miller products are known for their reliability, accuracy, and durability. Whether you need a low water cutoff switch for a boiler or a pump control for a cooling tower, McDonnell & Miller has the solution for you. Trust McDonnell & Miller to provide high-quality water level controls and flow switches that meet the needs of your system.
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  • McDonnell & Miller 142600 63-HD Auto Reset Mechanical Low Water Cut Off
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    McDonnell & Miller

    SKU: 142600

    142600

    $721.29
    3 in stock
  • McDonnell & Miller 140100 61 Low Water Cut-Off – Float Type for Steam Boilers
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    McDonnell & Miller

    SKU: 140100

    140100

    $646.39
    1 in stock
  • McDonnell & Miller 110400 5M Electric Switch with Manual Reset
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    McDonnell & Miller

    SKU: 110400

    110400

    $1,092.04
    1 in stock
  • McDonnell & Miller 135100 51-2-HD Replacement Head Mechanism for Mechanical Water Feeder with No. 2 Switch (LWCO Function)
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    McDonnell & Miller

    SKU: 135100

    135100

    $1,569.90
    1 in stock
  • McDonnell & Miller 135000 51-2 Mechanical Water Feeder with No. 2 Switch (Low Water Cut-Off Function)
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    McDonnell & Miller

    SKU: 135000

    135000

    $1,730.94
    1 in stock
  • McDonnell & Miller 110300 5 Electric Switch – Dual Level Control
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    McDonnell & Miller

    SKU: 110300

    110300

    $1,092.04
    2 in stock
  • McDonnell & Miller 129302 42S Combo Low Water Cut-Off & Pump Controller (Steam Boilers)
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    McDonnell & Miller

    SKU: 129302

    129302

    $1,050.85
    1 in stock
  • McDonnell & Miller 126800 25A Liquid Level Control – Make-Up Water Feeder
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    McDonnell & Miller

    SKU: 126800

    126800

    $1,439.58
    2 in stock
  • McDonnell & Miller 110000 2 Cut-Off Alarm Switch – SPDT Auto Reset, 120/240 VAC
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    McDonnell & Miller

    SKU: 110000

    110000

    $238.93
    4 in stock
  • McDonnell & Miller 176220 157S-R High Pressure Combo Low Water Cut-Off & Pump Controller (Steam)
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    McDonnell & Miller

    SKU: 176220

    176220

    $1,730.94
    1 in stock
  • McDonnell & Miller 172809 (173203) 150S-M-HD Head Mechanism
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    McDonnell & Miller

    SKU: 172809

    172809

    $1,069.99
    6 in stock
  • McDonnell & Miller 173003 Replacement Head Assembly for 150S Series Low Water Cut-Off 150S-HD
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    McDonnell & Miller

    SKU: 173003

    173003

    $1,079.99
    11 in stock

For emergencies, outside of business hours, call #901-604-7069