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McDonnell & Miller

McDonnell Miller controls for every boiler room and flow switches application. Order complete McDonnell Miller low water cutoff and other controls along with replacement head mechanisms and repair parts. All the McDonnell Miller products are on-the-shelf ready for same-day shipping from distribution centers in Minnesota, Illinois and Florida. Choose from a wide selection of McDonnell-Miller low water cut-offs, water feeders, pump controllers, flow switches and all the repair parts!

McDonnell & Miller Controls Documentation

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  1. McDonnell Miller Combination Control Model 150S-M-MD

    McDonnell Miller Combination Control Model 150S-M-MD

    SKU: MH1094A

    Combination float type low water cutoff & pump controller, with maximum differential operation that prevents nuisance burner shut-down in low pressure applications on steam boilers with a separate water column. Manual reset, (2) 120 volt bi-metal snap switches, 1 single pole, single throw for pump control and 1 single pole, double throw for low water cut-off and alarm actuation. Maximum pressure is 50 psi. Tapped 1" female IP. Learn More
    $631.75
  2. McDonnell Miller Combination Control Model 150S-MD

    McDonnell Miller Combination Control Model 150S-MD

    SKU: MH1096

    Combination float type low water cutoff & pump controller, with maximum differential operation that prevents nusance burner shut-down in low pressure applications on steam boilers with a separate water column. Automatic reset, (2) 120 volt bi-metal snap switches, 1 single pole, single throw for pump control and 1 single pole, double throw for low water cut-off and alarm actuation. Maximum pressure is 50 psi. Tapped 1" female IP. Learn More
    $631.75
  3. McDonnell Miller Combination Control Model 157S

    McDonnell Miller Combination Control Model 157S

    SKU: MH1100

    Combination float type low water cutoff & pump controller with integral water column & 1/2"NPT tappings for gauge glass & tri-cocks, for steam boilers. Automatic reset, (2) 120 volt bi-metal snap switches, 1 single pole, single throw for pump control and 1 single pole, double throw for low water cut-off and alarm actuation. Maximum pressure is 150 psi. Tapped 1" female IP. Learn More
    $826.50
  4. McDonnell Miller Combination Control Model 157S-AM

    McDonnell Miller Combination Control Model 157S-AM

    SKU: MH1100B

    Combination float type low water cutoff & pump controller with integral water column & 3/4"NPT tappings for gauge glass & tri-cocks, for steam boilers. Manual reset, (2) 120 volt bi-metal snap switches, 1 single pole, single throw for pump control and 1 single pole, double throw for low water cut-off and alarm actuation. Maximum pressure is 150 psi. Tapped 1-1/4" female IP. Learn More
    $826.50
  5. McDonnell Miller Combination Control Model 157S-M

    McDonnell Miller Combination Control Model 157S-M

    SKU: MH1102

    Combination float type low water cutoff & pump controller with integral water column & 1/2"NPT tappings for gauge glass & tri-cocks, for steam boilers. Manual reset, (2) 120 volt bi-metal snap switches, 1 single pole, single throw for pump control and 1 single pole, double throw for low water cut-off and alarm actuation. Maximum pressure is 150 psi. Tapped 1" female IP. Learn More
    $826.50
  6. McDonnell Miller Combination Control Model 157S-MD

    McDonnell Miller Combination Control Model 157S-MD

    SKU: MH1103

    Combination float type low water cutoff & pump controller with water column & 1/2" NPT tappings for gauge glass & tri-cocks, and with maximum differential operation that prevents nuisance burner shut-down in low pressure applications on steam boilers. Automatic reset, (2) 120 volt bi-metal snap switches, 1 single pole, single throw for pump control and 1 single pole, double throw for low water cut-off and alarm actuation. Maximum pressure is 50 psi. Tapped 1" female IP. Learn More
    $826.50
  7. McDonnell Miller Combination Control Model 157S-R

    McDonnell Miller Combination Control Model 157S-R

    SKU: MH1101

    Combination float type low water cutoff & pump controller with integral water column & 1/2"NPT tappings for gauge glass & tri-cocks, for steam boilers. Automatic reset, (2) 120 volt bi-metal switches, 1 single pole, single throw for pump control and 1 single pole, double throw for low water cut-off and alarm actuation. Maximum pressure is 150 psi. Alternative tappings 1" female IP. Learn More
    $935.75
  8. McDonnell Miller Combination Control Model 157S-RL

    McDonnell Miller Combination Control Model 157S-RL

    SKU: MH1101C

    Combination float type low water cutoff & pump controller with integral water column & 1/2"NPT tappings for gauge glass & tri-cocks, for steam boilers. Automatic reset, (2) 120 volt bi-metal snap switches, 1 single pole, single throw for pump control and 1 single pole, double throw for low water cut-off and alarm actuation. Maximum pressure is 150 psi. Alternative tappings 1-1/4" female IP. Learn More
    $935.75
  9. McDonnell Miller Combination Control Model 157S-RL-M

    McDonnell Miller Combination Control Model 157S-RL-M

    SKU: MH1101D

    Combination float type low water cutoff & pump controller with integral water column & 1/2"NPT tappings for gauge glass & tri-cocks, for steam boilers. Manual reset, (2) 120 volt bi-metal snap switches, 1 single pole, single throw for pump control and 1 single pole, double throw for low water cut-off and alarm actuation. Maximum pressure is 150 psi. Alternative tappings 1-1/4" female IP. Learn More
    $935.75
  10. McDonnell Miller Combination Control Model 157S-RM

    McDonnell Miller Combination Control Model 157S-RM

    SKU: MH1101A

    Combination float type low water cutoff & pump controller with integral water column & 1/2"NPT tappings for gauge glass & tri-cocks, for steam boilers. Manual reset, (2) 120 volt bi-metal switches, 1 single pole, single throw for pump control and 1 single pole, double throw for low water cut-off and alarm actuation. Maximum pressure is 150 psi. Alternative tappings 1" female IP. Learn More
    $935.75
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Free McDonnell Miller Catalog

McDonnell Miller Catalog

View repair parts guides, schematic drawings and product specs in the McDonnell Miller Maintenance & Repair Guide from State Supply. Click the cover image to get your free copy!

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