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  • WFE-24V, Uni-Match Universal Water Feeder<br>(24V) Product Image
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    WFE-24V, Uni-Match Universal Water Feeder (24V) 169550 WFE-24V, Uni-Match Universal Water Feeder (24V)
    SKU: 169550 Mcdonnell & Miller
    SKU: 169550
    Brand: Mcdonnell & Miller
    (29)
    $210.99 each
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    135
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    193
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    135 Wed, Aug 4
    58 Thu, Aug 5
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  • VXT-24 Water Feeder - 24V Product Image
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    VXT-24 Water Feeder - 24V 45-026 VXT-24 Water Feeder - 24V
    SKU: 45-026 Hydrolevel
    SKU: 45-026
    Brand: Hydrolevel
    (11)
    $211.67 each
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    125
    Wed, Aug 4
    361
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    125 Wed, Aug 4
    236 Thu, Aug 5
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  • 47-2, Mechanical Water Feeder w/ LWCO Function Product Image
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    47-2, Mechanical Water Feeder w/ LWCO Function 132800 47-2, Mechanical Water Feeder w/ LWCO Function
    SKU: 132800 Mcdonnell & Miller
    SKU: 132800
    Brand: Mcdonnell & Miller
    (8)
    $630.99 each
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    26
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    35
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    26 Wed, Aug 4
    9 Thu, Aug 5
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  • VXT-120 Water Feeder - 120V Product Image
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    VXT-120 Water Feeder - 120V 45-122 VXT-120 Water Feeder - 120V
    SKU: 45-122 Hydrolevel
    SKU: 45-122
    Brand: Hydrolevel
    (8)
    $211.67 each
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    75
    Wed, Aug 4
    247
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    75 Wed, Aug 4
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  • CO-12 Head Gasket for 42, 61, 63, 64, 65 Product Image
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    CO-12 Head Gasket for 42, 61, 63, 64, 65 302700 CO-12 Head Gasket for 42, 61, 63, 64, 65
    SKU: 302700 Mcdonnell & Miller
    SKU: 302700
    Brand: Mcdonnell & Miller
    $6.38 each
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    207
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    207 Wed, Aug 4
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  • 14-B, Blow Down Valve Ball Type for 47,247,67,70B Water Feeders Product Image
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    14-B, Blow Down Valve Ball Type for 47,247,67,70B Water Feeders 310447 14-B, Blow Down Valve Ball Type for 47,247,67,70B Water Feeders
    SKU: 310447 Mcdonnell & Miller
    SKU: 310447
    Brand: Mcdonnell & Miller
    (14)
    $81.77 each
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    56
    Wed, Aug 4
    64
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    56 Wed, Aug 4
    8 Thu, Aug 5
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  • WFE-120V, Uni-Match Universal Water Feeder<br>(120V) Product Image
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    WFE-120V, Uni-Match Universal Water Feeder (120V) 169560 WFE-120V, Uni-Match Universal Water Feeder (120V)
    SKU: 169560 Mcdonnell & Miller
    SKU: 169560
    Brand: Mcdonnell & Miller
    (5)
    $223.99 each
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    35
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    72
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    35 Wed, Aug 4
    37 Thu, Aug 5
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  • 101A-120V, Electric Water Feeder (120V) Product Image
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    101A-120V, Electric Water Feeder (120V) 169400 101A-120V, Electric Water Feeder (120V)
    SKU: 169400 Mcdonnell & Miller
    SKU: 169400
    Brand: Mcdonnell & Miller
    (1)
    $294.99 each
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    80
    Wed, Aug 4
    88
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    80 Wed, Aug 4
    8 Thu, Aug 5
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  • 37-39, Strainer or Blow Off Gasket for 47,53,67,70 Product Image
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    37-39, Strainer or Blow Off Gasket for 47,53,67,70 313300 37-39, Strainer or Blow Off Gasket for 47,53,67,70
    SKU: 313300 Mcdonnell & Miller
    SKU: 313300
    Brand: Mcdonnell & Miller
    $5.05 each
      Box Up & Save 5%  
    $48.00 box of 10
    $4.80 each
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    145
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    145
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    145 Wed, Aug 4
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  • RS-1-BR-1, Single Level Remote Sensor Product Image
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    RS-1-BR-1, Single Level Remote Sensor 179524 RS-1-BR-1, Single Level Remote Sensor
    SKU: 179524 Mcdonnell & Miller
    SKU: 179524
    Brand: Mcdonnell & Miller
    $135.77 each
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    10
    Wed, Aug 4
    44
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    10 Wed, Aug 4
    34 Thu, Aug 5
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  • 2M, Cutoff Switch w/ Man. Reset for M&M 47-2, 51-2 51S2, 63, and 247-2 Product Image
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    2M, Cutoff Switch w/ Man. Reset for M&M 47-2, 51-2 51S2, 63, and 247-2 110100 2M, Cutoff Switch w/ Man. Reset for M&M 47-2, 51-2 51S2, 63, and 247-2
    SKU: 110100 Mcdonnell & Miller
    SKU: 110100
    Brand: Mcdonnell & Miller
    $110.99 each
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    22
    Wed, Aug 4
    49
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    22 Wed, Aug 4
    27 Thu, Aug 5
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  • SA101-38, Strainer Basket Assembly 47, 51, 101A Product Image
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    SA101-38, Strainer Basket Assembly 47, 51, 101A 347100 SA101-38, Strainer Basket Assembly 47, 51, 101A
    SKU: 347100 Mcdonnell & Miller
    SKU: 347100
    Brand: Mcdonnell & Miller
    $38.00 each
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    58
    Wed, Aug 4
    96
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    58 Wed, Aug 4
    38 Thu, Aug 5
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  • SA67-2, Float & Bellow Assembly Product Image
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    SA67-2, Float & Bellow Assembly 344200 SA67-2, Float & Bellow Assembly
    SKU: 344200 Mcdonnell & Miller
    SKU: 344200
    Brand: Mcdonnell & Miller
    (5)
    $129.31 each
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    21
    Wed, Aug 4
    30
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    21 Wed, Aug 4
    9 Thu, Aug 5
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  • F-26, M35 Gasket for 221 25A, 51, 53, 3155 Product Image
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    F-26, M35 Gasket for 221 25A, 51, 53, 3155 304200 F-26, M35 Gasket for 221 25A, 51, 53, 3155
    SKU: 304200 Mcdonnell & Miller
    SKU: 304200
    Brand: Mcdonnell & Miller
    $8.12 each
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    96
    Wed, Aug 4
    96
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    96 Wed, Aug 4
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  • 101A-24V, Electric Water Feeder (24V) Product Image
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    101A-24V, Electric Water Feeder (24V) 169500 101A-24V, Electric Water Feeder (24V)
    SKU: 169500 Mcdonnell & Miller
    SKU: 169500
    Brand: Mcdonnell & Miller
    (4)
    $388.56 each
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    39
    Wed, Aug 4
    39
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    39 Wed, Aug 4
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  • 37-26, Head Gasket for 47 Product Image
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    37-26, Head Gasket for 47 313800 37-26, Head Gasket for 47
    SKU: 313800 Mcdonnell & Miller
    SKU: 313800
    Brand: Mcdonnell & Miller
    $9.37 each
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    90
    Wed, Aug 4
    90
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    90 Wed, Aug 4
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  • 51-2, Mechanical Water Feeder w/ #2 Switch (LWCO Function) Product Image
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    51-2, Mechanical Water Feeder w/ #2 Switch (LWCO Function) 135000 51-2, Mechanical Water Feeder w/ #2 Switch (LWCO Function)
    SKU: 135000 Mcdonnell & Miller
    SKU: 135000
    Brand: Mcdonnell & Miller
    $780.02 each
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    14
    Wed, Aug 4
    26
    QtyArrives
    14 Wed, Aug 4
    12 Thu, Aug 5
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  • 2, Cutoff Switch for McDonnell & Miller 47-2<br>51-2, 51S2, 63, and 247-2 Product Image
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    2, Cutoff Switch for McDonnell & Miller 47-2 51-2, 51S2, 63, and 247-2 110000 2, Cutoff Switch for McDonnell & Miller 47-2 51-2, 51S2, 63, and 247-2
    SKU: 110000 Mcdonnell & Miller
    SKU: 110000
    Brand: Mcdonnell & Miller
    (2)
    $133.05 each
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    32
    Wed, Aug 4
    64
    QtyArrives
    32 Wed, Aug 4
    32 Thu, Aug 5
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  • SA51-101-102, Valve and Strainer for 51, 851 Product Image
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    SA51-101-102, Valve and Strainer for 51, 851 342500 SA51-101-102, Valve and Strainer for 51, 851
    SKU: 342500 Mcdonnell & Miller
    SKU: 342500
    Brand: Mcdonnell & Miller
    (1)
    $244.39 each
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    12
    Wed, Aug 4
    18
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    12 Wed, Aug 4
    6 Thu, Aug 5
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  • 37-101, Tetraseal O-Ring for 21, 25A, 47, 51, 53, 101A Product Image
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    37-101, Tetraseal O-Ring for 21, 25A, 47, 51, 53, 101A 324500 37-101, Tetraseal O-Ring for 21, 25A, 47, 51, 53, 101A
    SKU: 324500 Mcdonnell & Miller
    SKU: 324500
    Brand: Mcdonnell & Miller
    $10.97 each
      Box Up & Save 5%  
    $52.30 box of 5
    $10.46 each
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    29
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  • SA47-101-102, Cartridge and Strainer Assembly<br>for 47, 247, 847 Product Image
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    SA47-101-102, Cartridge and Strainer Assembly for 47, 247, 847 341600 SA47-101-102, Cartridge and Strainer Assembly for 47, 247, 847
    SKU: 341600 Mcdonnell & Miller
    SKU: 341600
    Brand: Mcdonnell & Miller
    (5)
    $244.39 each
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    12
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    15
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    12 Wed, Aug 4
    3 Thu, Aug 5
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  • 21, Make-Up Water Feeder Product Image
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    21, Make-Up Water Feeder 126400 21, Make-Up Water Feeder
    SKU: 126400 Mcdonnell & Miller
    SKU: 126400
    Brand: Mcdonnell & Miller
    (2)
    $540.00 each
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    16
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    20
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    16 Wed, Aug 4
    4 Thu, Aug 5
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  • Water Feeder Valve Assembly - 24V Product Image
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    Water Feeder Valve Assembly - 24V 45-343 Water Feeder Valve Assembly - 24V
    SKU: 45-343 Hydrolevel
    SKU: 45-343
    Brand: Hydrolevel
    (1)
    $82.44 each
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    18
    Wed, Aug 4
    19
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    18 Wed, Aug 4
    1 Thu, Aug 5
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  • 37-27, Valve Bracket Gasket for 51, 47, 247 Product Image
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    37-27, Valve Bracket Gasket for 51, 47, 247 313900 37-27, Valve Bracket Gasket for 51, 47, 247
    SKU: 313900 Mcdonnell & Miller
    SKU: 313900
    Brand: Mcdonnell & Miller
    $5.05 each
      Box Up & Save 5%  
    $23.95 box of 5
    $4.79 each
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    32
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    32
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    32 Wed, Aug 4
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FAQs, Manuals & Videos

Resources

Articles

  • Water feeders protect boilers by maintaining a safe water level. Low water cutoffs work in coordination with water feeders to detect the fluid level in hot water and steam boilers. If water level falls below the minimum safe operating level, the water feeder is initiated. Water feeders can be automatic (electric) or manually operated.

    Electric water feeders eliminate the need to manually add water to the boiler. These water feeders are used for low pressure steam boilers with a cold water feed. Electric water feeders detect fluid, expose leaks, and provide the necessary information needed to diagnose a problem.

    Mechanical water feeders are used for hot water and low pressure steam boilers with a cold water feed. Mechanical feeders contain a float which responds to the water level in a boiler. These units are quiet, durable and feature an isolated feed valve which minimizes lime and scale build-up.

    We offer a wide selection of McDonnell & Miller, Taco and Hydrolevel water feeders for protection of all types of boilers, ranging from small residential hot water boilers to large industrial steam units.

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