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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
    253
    Wed, Jul 15
    421
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    253 Wed, Jul 15
    168 Thu, Jul 16
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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
    15
    Wed, Jul 15
    49
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    34 Thu, Jul 16
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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
    (12)
    $81.99 each
    9
    Wed, Jul 15
    37
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    28 Thu, Jul 16
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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
    23
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    230
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    207 Thu, Jul 16
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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
    19
    Wed, Jul 15
    39
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    19 Wed, Jul 15
    20 Thu, Jul 16
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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
    32
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    61
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    32 Wed, Jul 15
    29 Thu, Jul 16
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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
    (5)
    $224.99 each
    42
    Wed, Jul 15
    183
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    42 Wed, Jul 15
    141 Thu, Jul 16
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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
    $767.99 each
    16
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    41
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    25 Thu, Jul 16
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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
    21
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    63
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    42 Thu, Jul 16
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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
    2
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    42
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    40 Thu, Jul 16
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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
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    30
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    17 Thu, Jul 16
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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
    14
    Wed, Jul 15
    19
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    14 Wed, Jul 15
    5 Thu, Jul 16
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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
    41
    Wed, Jul 15
    83
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    41 Wed, Jul 15
    42 Thu, Jul 16
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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
    26
    Thu, Jul 16
    26
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    26 Thu, Jul 16
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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
    1
    Wed, Jul 15
    14
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    13 Thu, Jul 16
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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
    $5.17 each
    35
    Wed, Jul 15
    60
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    25 Thu, Jul 16
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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
    8
    Wed, Jul 15
    72
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    64 Thu, Jul 16
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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
    4
    Wed, Jul 15
    18
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    14 Thu, Jul 16
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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
    4
    Wed, Jul 15
    19
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    15 Thu, Jul 16
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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
    8
    Wed, Jul 15
    17
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    9 Thu, Jul 16
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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
    $11.89 each
    16
    Wed, Jul 15
    41
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    16 Wed, Jul 15
    25 Thu, Jul 16
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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
    6
    Wed, Jul 15
    34
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    28 Thu, Jul 16
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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
    3
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    17
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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
    $234.99 each
    7
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    16
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    9 Thu, Jul 16
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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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