McDonnell & Miller

McDonnell & Miller

  • 165900 McDonnell & Miller 94M LWCO & Pump Controller
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    165900 McDonnell & Miller 94M LWCO & Pump Controller

    McDonnell & Miller

    $2,117.95
    165900 McDonnell & Miller Level Control 94M. Information: Mcdonnell & Miller Submittal Sheet Features For commercial and industrial low or high pressure steam boilers Maintains consistent water level regardless of pressure For...
    Availability:
    This Item Usually Ships The Same Day!
    Weight:
    53.00 LBS
    $2,117.95
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  • 120175 McDonnell & Miller FS7-4SE - 1-1/4" Flow Switch

    120175 McDonnell & Miller FS7-4SE - 1-1/4" Flow Switch

    McDonnell & Miller

    120175 McDonnell & Miller FS7-4SE - 1-1/4" Flow Switch With Stainless Steel Body And NEMA 7 & 9 Enclosure. Mcdonnell & Miller 120175 Instruction Manual Features: For hazardous environment applications requiring a NEMA 7 (Class I,...
    Availability:
    This Item Usually Ships The Same Day!
    Weight:
    11.00 LBS
  • 114795 McDonnell & Miller FS5-S-1 - 1" Flow Switch
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    114795 McDonnell & Miller FS5-S-1 - 1" Flow Switch

    McDonnell & Miller

    $1,517.95
    114795 McDonnell & Miller FS5-S-1 - 1" Flow Switch With Stainless Steel Body 114795. McDonnell & Miller FS5 Instruction Manual Features: In-line configuration eliminates need for a pipe tee Sizes available: 3/4" NPT, 1" NPT Materials...
    Availability:
    This Item Usually Ships The Same Day!
    Weight:
    3.00 LBS
    $1,517.95
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  • 114765 McDonnell & Miller FS5-J-3/4 - 3/4" Flow Switch

    114765 McDonnell & Miller FS5-J-3/4 - 3/4" Flow Switch

    McDonnell & Miller

    114765 McDonnell & Miller FS5-J-3/4 - 3/4" Flow Switch. McDonnell & Miller FS5 Instruction Manual Features: In-line configuration eliminates need for a pipe tee Sizes available: 3/4" NPT, 1" NPT Materials of construction: Brass, carbon...
    Availability:
    This Item Usually Ships The Same Day!
    Weight:
    3.00 LBS
  • 173603 McDonnell & Miller 157S-MD Hi Pressure Level Control
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    173603 McDonnell & Miller 157S-MD Hi Pressure Level Control

    McDonnell & Miller

    $1,408.95
    173603 McDonnell & Miller 157S-MD Hi Pressure Level Control. McDonnell & Miller 150S/157S Instruction Manual Specifications For boilers of any steaming capacity Model 173603 - 157S-MD Monel bellows provides corrosion resistance Snap...
    Availability:
    This Item Usually Ships The Same Day!
    Weight:
    45.00 LBS
    $1,408.95
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  • 175402 McDonnell & Miller 157S-M Hi Pressure Level Control

    175402 McDonnell & Miller 157S-M Hi Pressure Level Control

    McDonnell & Miller

    175402 McDonnell & Miller 157S-M Hi Pressure Level Control. *Please note this item is discontinued and replaced by the 172812 McDonnell & Miller 157S-M Hi Pressure Level Control. Information: McDonnell & Miller 150S/157S Instruction...
    Availability:
    This Item Usually Ships The Same Day!
    Weight:
    45.00 LBS
  • 149700 McDonnell & Miller Mechanical Low Water Cut Off 67-M

    149700 McDonnell & Miller Mechanical LWCO 67-M

    McDonnell & Miller

     **Discontinued 149700 McDonnell & Miller Mechanical Low Water Cut Off 67-M. Float Type Low Water Cut Off For Millivolt Service. P/N's 149400 and 354001 are the equivalent to P/N 149700. Information: McDonnell & Miller LWCO...
    Availability:
    This Item Usually Ships The Same Day!
    Weight:
    12.00 LBS
  • 137100 McDonnell & Miller 53-2 Mechanical Water Feeder

    137100 McDonnell & Miller 53-2 Mechanical Water Feeder

    McDonnell & Miller

    137100 McDonnell & Miller 53-2 Mechanical Water Feeder. Features: For low pressure steam and hot water boilers larger than 5,000 sq. ft. (465m2 ) with hot or cold water feed Optional features No. 2 switch Manual reset Float...
    Availability:
    This Item Usually Ships The Same Day!
    Weight:
    39.00 LBS
  • 134700 McDonnell & Miller Mechanical Water Feeder 51
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    134700 McDonnell & Miller Mechanical Water Feeder 51

    McDonnell & Miller

    $1,354.95
    134700 McDonnell & Miller Mechanical Water Feeder 51. For low pressure steam and hot water boilers larger than 5,000 sq. ft. (465m2) capacity with cold water feed Quick-change replaceable cartridge valve and strainer Optional...
    Availability:
    This Item Usually Ships The Same Day!
    Weight:
    36.00 LBS
    $1,354.95
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  • 153827-LWCO McDonnell & Miller PSE-801-120 Probe Control
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    153827 LWCO McDonnell & Miller PSE-801-120 Probe Control

    McDonnell & Miller

    $324.95
    The Series 153827-LWCO McDonnell & Miller PSE-801-120 Probe Control type LWCO uses patented technology to monitor changes in water conductivity. When defined parameters are exceeded the new PSE-800 makes a decision to shut the burner off based...
    Availability:
    This Item Usually Ships The Same Day!
    Weight:
    3.00 LBS
    $324.95
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  • 153828-LWCO - McDonnell & Miller PSE-801-U-120 Probe Control
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    153828-LWCO - McDonnell & Miller PSE-801-U-120 Probe Control

    McDonnell & Miller

    $358.95
    The Series 153876 - McDonnell & Miller PS-801-U-120 Probe Control type LWCO uses patented technology to monitor changes in water conductivity. When defined parameters are exceeded the new PSE-800 makes a decision to shut the burner off based on...
    Availability:
    This Item Usually Ships The Same Day!
    Weight:
    3.00 LBS
    $358.95
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  • 115100 McDonnell & Miller FS4-3T1-1 - 1" Flow Switch

    115100 McDonnell & Miller FS4-3T1-1 - 1" Flow Switch

    McDonnell & Miller

    115100 McDonnell & Miller FS4-3T1-1 - 1" Flow Switch With NPT Body High Flow Switch. McDonnell & Miller FS4 Instruction Manual Features: For starting or stopping electrically operated equipment such as signal lights, alarms, motors,...
    Availability:
    This Item Usually Ships The Same Day!
    Weight:
    3.00 LBS
  • 163200 McDonnell & Miller 93 LWCO 93-7B-HB
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    163200 McDonnell & Miller 93 LWCO 93-7B-HB

    McDonnell & Miller

    $2,948.95
    163200 McDonnell & Miller 93 LWCO 93-7B-HB, comes with standard number 7B switch, for models #93 and #193 controls. Information: McDonnell & Miller LWCO Instruction Manual
    Availability:
    This Item Usually Ships The Same Day!
    Weight:
    17.00 LBS
    $2,948.95
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Boiler Controls. McDonnell & Miller Low Water cut-offs are specially designed to protect steam and hot water boilers from the hazards of a low water condition. In operation they will interrupt the electrical current to the firing device, if the water in the system drops below the boiler manufacturer’s minimum safe water level. Our low water cut-offs also provide an additional circuit for a low water alarm, should you desire to install one, for additional protection.

If you have any questions please give us a call at 1-800-781-7405 or email us your request. Sales@NationalPumpSupply.com