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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
    Brand: Mcdonnell & Miller
    (20)
    $211.99 each
    32
    Wed, Jun 10
    200
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    168 Thu, Jun 11
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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
    Brand: Mcdonnell & Miller
    (8)
    $631.99 each
    18
    Wed, Jun 10
    54
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    36 Thu, Jun 11
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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
    Brand: Mcdonnell & Miller
    (11)
    $81.99 each
    16
    Wed, Jun 10
    45
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    29 Thu, Jun 11
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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 302600 CO-12 Head Gasket for 42, 61, 63, 64, 65
    SKU: 302600
    Brand: Mcdonnell & Miller
    (1)
    $6.89 each
    39
    Wed, Jun 10
    371
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    332 Thu, Jun 11
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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
    Brand: Mcdonnell & Miller
    (1)
    $295.99 each
    21
    Wed, Jun 10
    43
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    22 Thu, Jun 11
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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 313200 37-39, Strainer or Blow Off Gasket for 47,53,67,70
    SKU: 313200
    Brand: Mcdonnell & Miller
    (3)
    $4.99 each
    36
    Wed, Jun 10
    89
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    36 Wed, Jun 10
    53 Thu, Jun 11
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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
    Brand: Mcdonnell & Miller
    (4)
    $224.99 each
    12
    Wed, Jun 10
    61
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    49 Thu, Jun 11
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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
    Brand: Mcdonnell & Miller
    $779.99 each
    17
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    44
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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
    Brand: Mcdonnell & Miller
    $38.99 each
    40
    Wed, Jun 10
    100
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    60 Thu, Jun 11
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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
    Brand: Mcdonnell & Miller
    $139.99 each
    14
    Wed, Jun 10
    55
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    14 Wed, Jun 10
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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
    Brand: Mcdonnell & Miller
    (5)
    $256.99 each
    13
    Wed, Jun 10
    30
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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
    Brand: Mcdonnell & Miller
    (2)
    $486.99 each
    17
    Wed, Jun 10
    24
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    17 Wed, Jun 10
    7 Thu, Jun 11
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  • 37-26, Head Gasket for 47 Product Image
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    37-26, Head Gasket for 47 312700 37-26, Head Gasket for 47
    SKU: 312700
    Brand: Mcdonnell & Miller
    $9.29 each
    51
    Wed, Jun 10
    94
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    43 Thu, Jun 11
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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
    Brand: Mcdonnell & Miller
    $111.99 each
    6
    Wed, Jun 10
    41
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    6 Wed, Jun 10
    35 Thu, Jun 11
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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
    Brand: Mcdonnell & Miller
    (4)
    $388.99 each
    4
    Wed, Jun 10
    16
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    12 Thu, Jun 11
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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 312800 37-27, Valve Bracket Gasket for 51, 47, 247
    SKU: 312800
    Brand: Mcdonnell & Miller
    $4.89 each
    38
    Wed, Jun 10
    64
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    26 Thu, Jun 11
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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 304100 F-26, M35 Gasket for 221, 25A, 51, 53, 3155
    SKU: 304100
    Brand: Mcdonnell & Miller
    $9.99 each
    7
    Wed, Jun 10
    63
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    7 Wed, Jun 10
    56 Thu, Jun 11
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  • 25-A, Make-Up Water Feeder Product Image
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    25-A, Make-Up Water Feeder 126800 25-A, Make-Up Water Feeder
    SKU: 126800
    Brand: Mcdonnell & Miller
    (2)
    $669.99 each
    5
    Wed, Jun 10
    21
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    16 Thu, Jun 11
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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
    Brand: Mcdonnell & Miller
    (5)
    $102.99 each
    9
    Wed, Jun 10
    27
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  • 25-A-HD, Head Assembly for 25-A Water Feeder Product Image
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    25-A-HD, Head Assembly for 25-A Water Feeder 127100 25-A-HD, Head Assembly for 25-A Water Feeder
    SKU: 127100
    Brand: Mcdonnell & Miller
    (1)
    $631.99 each
    7
    Wed, Jun 10
    14
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    7 Wed, Jun 10
    7 Thu, Jun 11
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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 324435 37-101, Tetraseal O-Ring for 21, 25A, 47, 51, 53, 101A
    SKU: 324435
    Brand: Mcdonnell & Miller
    $11.19 each
    23
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    41
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  • SA150-106R, Bellows Assembly for Series 42<br>150 & 157 Product Image
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    SA150-106R, Bellows Assembly for Series 42 150 & 157 347900 SA150-106R, Bellows Assembly for Series 42 150 & 157
    SKU: 347900
    Brand: Mcdonnell & Miller
    (1)
    $161.99 each
    7
    Wed, Jun 10
    24
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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
    Brand: Mcdonnell & Miller
    (2)
    $111.99 each
    5
    Wed, Jun 10
    34
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    29 Thu, Jun 11
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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
    Brand: Mcdonnell & Miller
    $279.99 each
    7
    Wed, Jun 10
    18
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    7 Wed, Jun 10
    11 Thu, Jun 11
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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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