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 114400 FS4-3 – 1" NPT General Purpose Paddle Flow Switch
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    McDonnell & Miller

    SKU: 114400

    114400

    $199.99
    26 in stock
  • McDonnell & Miller 194 (166600) Pump Controller
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    McDonnell & Miller

    SKU: 166600

    166600

    $2,616.26
    1 in stock
  • McDonnell & Miller 194 (166600) – Low-Water Cut-Off & Pump Controller with TC-4 Test-N-Check Blow Down Valve
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    McDonnell & Miller

    SKU: 195000

    195000

    $793.19
    1 in stock
  • McDonnell & Miller 339900 SA25A-6 – Valve Subassembly for 25A Series
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    McDonnell & Miller

    SKU: 339900

    339900

    $634.40
    1 in stock
  • McDonnell & Miller 347600 – Float, Rod & Gasket Kit for 150 Series (SA150-11)
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    McDonnell & Miller

    SKU: 347600

    347600

    $357.27
    8 in stock
  • McDonnell & Miller 176203 – RS-1-LP Low Pressure Remote Sensor
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    McDonnell & Miller

    SKU: 176203

    176203

    $147.55
    1 in stock
  • Xylem McDonnell & Miller RS-1-HP Remote Sensor Probe Holder – High Pressure, 3/4" NPT Tank Connection
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    McDonnell & Miller

    SKU: 176199

    176199

    $182.01
    2 in stock
  • McDonnell & Miller 179524 – RS-1-BR-1 Single Level Remote Sensor Probe Holder
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    McDonnell & Miller

    SKU: 179524

    179524

    $274.13
    2 in stock
  • McDonnell & Miller 120601 FS8-W – 1" NPT NEMA 4X Liquid Flow Switch, SPDT
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    McDonnell & Miller

    SKU: 120601

    120601

    $269.99
    29 in stock
  • McDonnell & Miller 120201 FS7-4W – 1¼" NPT NEMA 4X Industrial Liquid Flow Switch
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    McDonnell & Miller

    SKU: 120201

    120201

    $726.53
    1 in stock

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