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McDonnell & Miller

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Product Image of 250-1-100, Relief Valve 1" NPT, 100 psi (7 kg/cm2)
250-1-100, Relief Valve 1" NPT, 100 psi (7 kg/cm2)
SKU: 182425
McDonnell & Miller
SKU: 182425
Brand: McDonnell & Miller
$379.33 each
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Product Image of 250-2-30, Relief Valve 2" NPT, 30 psi (2.1 kg/cm2)
250-2-30, Relief Valve 2" NPT, 30 psi (2.1 kg/cm2)
SKU: 183025
McDonnell & Miller
SKU: 183025
Brand: McDonnell & Miller
$974.21 each
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Product Image of 250-2-40, Relief Valve 2" NPT, 40 psi (2.8 kg/cm2)
250-2-40, Relief Valve 2" NPT, 40 psi (2.8 kg/cm2)
SKU: 183175
McDonnell & Miller
SKU: 183175
Brand: McDonnell & Miller
$1,276.66 each
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Product Image of 250-3/4-15, Relief Valve 3/4" NPT, 15 psi (1 kg/cm2)
250-3/4-15, Relief Valve 3/4" NPT, 15 psi (1 kg/cm2)
SKU: 181220
McDonnell & Miller
SKU: 181220
Brand: McDonnell & Miller
$163.10 each
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Product Image of 250-1-65, Relief Valve 1" NPT, 65 psi (4.6 kg/cm2)
250-1-65, Relief Valve 1" NPT, 65 psi (4.6 kg/cm2)
SKU: 182235
McDonnell & Miller
SKU: 182235
Brand: McDonnell & Miller
$251.45 each
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Product Image of 250-1-36, Relief Valve 1" NPT, 36 psi (2.5 kg/cm2)
250-1-36, Relief Valve 1" NPT, 36 psi (2.5 kg/cm2)
SKU: 182025
McDonnell & Miller
SKU: 182025
Brand: McDonnell & Miller
$266.60 each
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Product Image of 250-1-75, Relief Valve 1" NPT, 75 psi (5.3 kg/cm2)
250-1-75, Relief Valve 1" NPT, 75 psi (5.3 kg/cm2)
SKU: 182325
McDonnell & Miller
SKU: 182325
Brand: McDonnell & Miller
$252.19 each
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Product Image of 260-1-1/2-45, Relief Valve 1-1/2" NPT, 45 psi (3.2 kg/cm2)
260-1-1/2-45, Relief Valve 1-1/2" NPT, 45 psi (3.2 kg/cm2)
SKU: 182825
McDonnell & Miller
SKU: 182825
Brand: McDonnell & Miller
$959.00 each
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Product Image of 150S-B-M, Mechanical Low Water Cutoff & Pump Controller w/ Manual Reset (Steam)
150S-B-M, Mechanical Low Water Cutoff & Pump Controller w/ Manual Reset (Steam)
SKU: 150S-B-M
McDonnell & Miller
SKU: 150S-B-M
Brand: McDonnell & Miller
$4,084.16 each
In Stock
Get 10 by Mon, Oct 19
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Product Image of 193-7B-M, Combo Low Water Cut-Off & Pump Controller w/ #7B Switch w/ Manual Reset (Steam)
193-7B-M, Combo Low Water Cut-Off & Pump Controller w/ #7B Switch w/ Manual Reset (Steam)
SKU: 164525
McDonnell & Miller
SKU: 164525
Brand: McDonnell & Miller
$3,844.53 each
In Stock
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Product Image of SWA158S, Snap Switch Assembly for 158 Water Feeder
SWA158S, Snap Switch Assembly for 158 Water Feeder
SKU: 310468
McDonnell & Miller
SKU: 310468
Brand: McDonnell & Miller
$485.00 each
In Stock
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Product Image of 851, Make-Up Water Feeder
851, Make-Up Water Feeder
SKU: 136700
McDonnell & Miller
SKU: 136700
Brand: McDonnell & Miller
$1,490.00 each
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Product Image of 53-HD, Head Mechanism for Mechanical Water Feeder
53-HD, Head Mechanism for Mechanical Water Feeder
SKU: 137000
McDonnell & Miller
SKU: 137000
Brand: McDonnell & Miller
$1,855.00 each
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Product Image of 53-2-M-HD, Head Replacement for Mechanical Water Feeder
53-2-M-HD, Head Replacement for Mechanical Water Feeder
SKU: 137250
McDonnell & Miller
SKU: 137250
Brand: McDonnell & Miller
$1,741.76 each
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Product Image of FS8-WZ, 1" Flow Switch w/ ANSI terminal connections
FS8-WZ, 1" Flow Switch w/ ANSI terminal connections
SKU: 120605
McDonnell & Miller
SKU: 120605
Brand: McDonnell & Miller
$251.71 each
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Product Image of FS7-4EL, 1-1/4" Flow Switch w/ NEMA 7 & 9 enclosure, w/extended paddle & paddle arm
FS7-4EL, 1-1/4" Flow Switch w/ NEMA 7 & 9 enclosure, w/extended paddle & paddle arm
SKU: 120150
McDonnell & Miller
SKU: 120150
Brand: McDonnell & Miller
$751.93 each
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Product Image of 260-1-1/2-36, Relief Valve 1-1/2" NPT, 36 psi (2.5 kg/cm2)
260-1-1/2-36, Relief Valve 1-1/2" NPT, 36 psi (2.5 kg/cm2)
SKU: 182725
McDonnell & Miller
SKU: 182725
Brand: McDonnell & Miller
$959.00 each
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Product Image of 250-2-45, Relief Valve 2" NPT, 45 psi (3.2 kg/cm2)
250-2-45, Relief Valve 2" NPT, 45 psi (3.2 kg/cm2)
SKU: 183225
McDonnell & Miller
SKU: 183225
Brand: McDonnell & Miller
$1,242.20 each
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Product Image of 250-3/4-50, Relief Valve 3/4" NPT, 50 psi (3.5 kg/cm2)
250-3/4-50, Relief Valve 3/4" NPT, 50 psi (3.5 kg/cm2)
SKU: 181525
McDonnell & Miller
SKU: 181525
Brand: McDonnell & Miller
$163.10 each
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Product Image of 158S-M-MD, Combination Low Water Cutoff & Pump Controller w/ 2 SPDT switches, w/ Manual Reset, w/ Maximum Differential
158S-M-MD, Combination Low Water Cutoff & Pump Controller w/ 2 SPDT switches, w/ Manual Reset, w/ Maximum Differential
SKU: 172820
McDonnell & Miller
SKU: 172820
Brand: McDonnell & Miller
$1,580.00 each
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Product Image of 157S-P-MD, Float Type, Combo LWCO & Pump Controller w/ Water Column, w/ side ports and maximum differential (Steam)
157S-P-MD, Float Type, Combo LWCO & Pump Controller w/ Water Column, w/ side ports and maximum differential (Steam)
SKU: 176223
McDonnell & Miller
SKU: 176223
Brand: McDonnell & Miller
$1,817.79 each
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Product Image of 157S-M-MD, Float Type, Combo LWCO & Pump Controller w/ Water Column, Manual Reset & Maximum differential (Steam)
157S-M-MD, Float Type, Combo LWCO & Pump Controller w/ Water Column, Manual Reset & Maximum differential (Steam)
SKU: 172813
McDonnell & Miller
SKU: 172813
Brand: McDonnell & Miller
$1,803.34 each
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Product Image of 158S-M-MD-HD, Head Assembly for 158S Low Water Cutoff, w/ Manual Reset, w/ Maximum Differential
158S-M-MD-HD, Head Assembly for 158S Low Water Cutoff, w/ Manual Reset, w/ Maximum Differential
SKU: 172822
McDonnell & Miller
SKU: 172822
Brand: McDonnell & Miller
$1,289.38 each
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Product Image of Series 93, Low Water Cut-Off/Pump Controller - Snap Acting Switch
Series 93, Low Water Cut-Off/Pump Controller - Snap Acting Switch
SKU: 162300
McDonnell & Miller
SKU: 162300
Brand: McDonnell & Miller
$2,416.44 each
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Product Image of 193-A, Combo Low Water Cut-Off & Pump Controller w/ #5 Switch w/ Alternate Tappings (Steam)
193-A, Combo Low Water Cut-Off & Pump Controller w/ #5 Switch w/ Alternate Tappings (Steam)
SKU: 163500
McDonnell & Miller
SKU: 163500
Brand: McDonnell & Miller
$3,270.85 each
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Product Image of 193-A-M, Combo Low Water Cut-Off & Pump Controller w/ #5 Switch, w/ Alternate Tappings, w/ Manual Reset (Steam)
193-A-M, Combo Low Water Cut-Off & Pump Controller w/ #5 Switch, w/ Alternate Tappings, w/ Manual Reset (Steam)
SKU: 164200
McDonnell & Miller
SKU: 164200
Brand: McDonnell & Miller
$2,517.96 each
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Product Image of FS8-33, Replacement Switch
FS8-33, Replacement Switch
SKU: 310478
McDonnell & Miller
SKU: 310478
Brand: McDonnell & Miller
$133.00 each
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Product Image of AF1-21, Replacement Gasket for Air Flow Switch
AF1-21, Replacement Gasket for Air Flow Switch
SKU: 301200
McDonnell & Miller
SKU: 301200
Brand: McDonnell & Miller
$10.54 each
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Product Image of FS4-3D-17, Replacement SPDT Switch for Flow Switches
FS4-3D-17, Replacement SPDT Switch for Flow Switches
SKU: 305512
McDonnell & Miller
SKU: 305512
Brand: McDonnell & Miller
$36.47 each
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Product Image of 37-200, Replacement Cover
37-200, Replacement Cover
SKU: 312600
McDonnell & Miller
SKU: 312600
Brand: McDonnell & Miller
$12.53 each
In Stock
Get 1 by Tomorrow, Oct 16
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Product Image of FS7-28S, Replacement Paddle for FS7-F4
FS7-28S, Replacement Paddle for FS7-F4
SKU: 306800
McDonnell & Miller
SKU: 306800
Brand: McDonnell & Miller
$46.33 each
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Product Image of S-2, Switch Cover Replacement
S-2, Switch Cover Replacement
SKU: 308000
McDonnell & Miller
SKU: 308000
Brand: McDonnell & Miller
$23.62 each
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Product Image of AF1-122, Paddle Kit for AF1 & AF1-J
AF1-122, Paddle Kit for AF1 & AF1-J
SKU: 336000
McDonnell & Miller
SKU: 336000
Brand: McDonnell & Miller
$47.50 each
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Product Image of SA847-4, Bellows assembly for 847
SA847-4, Bellows assembly for 847
SKU: 352800
McDonnell & Miller
SKU: 352800
Brand: McDonnell & Miller
$480.00 each
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Product Image of 157S-RD-MD, Float Type, Combo LWCO & Pump Controller w/ Water Column, w/ Maximum Differential
157S-RD-MD, Float Type, Combo LWCO & Pump Controller w/ Water Column, w/ Maximum Differential
SKU: 176802
McDonnell & Miller
SKU: 176802
Brand: McDonnell & Miller
$1,936.30 each
In Stock
Get 1 by Mon, Oct 19
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Product Image of FS7-4WL, 1-1/4" Flow Switch w/ NEMA 4X enclosure, w/extended paddle & paddle arm
FS7-4WL, 1-1/4" Flow Switch w/ NEMA 4X enclosure, w/extended paddle & paddle arm
SKU: 120301
McDonnell & Miller
SKU: 120301
Brand: McDonnell & Miller
$653.55 each
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Product Image of FS4- 3J, 1" Flow Switch w/ BSPT connections
FS4- 3J, 1" Flow Switch w/ BSPT connections
SKU: 114610
McDonnell & Miller
SKU: 114610
Brand: McDonnell & Miller
$213.08 each
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Product Image of FS5-D-3/4, 3/4 Flow Switch w/2 SPDT switches
FS5-D-3/4, 3/4 Flow Switch w/2 SPDT switches
SKU: 114763
McDonnell & Miller
SKU: 114763
Brand: McDonnell & Miller
$406.44 each
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Product Image of FS4-3T2-1, 1" Flow Switch w/ NPT body (Medium Flow Rate)
FS4-3T2-1, 1" Flow Switch w/ NPT body (Medium Flow Rate)
SKU: 115200
McDonnell & Miller
SKU: 115200
Brand: McDonnell & Miller
$296.97 each
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Product Image of 250-3/4-36, Relief Valve 3/4" NPT, 36 psi (2.5 kg/cm2)
250-3/4-36, Relief Valve 3/4" NPT, 36 psi (2.5 kg/cm2)
SKU: 181325
McDonnell & Miller
SKU: 181325
Brand: McDonnell & Miller
$164.35 each
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Product Image of 158S-HD, Head Assembly for 158S Low Water Cutoff
158S-HD, Head Assembly for 158S Low Water Cutoff
SKU: 178602
McDonnell & Miller
SKU: 178602
Brand: McDonnell & Miller
$1,305.17 each
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Product Image of 260-1-1/2-30, Relief Valve 1-1/2 NPT, 30 psi (2.1 kg/cm2)
260-1-1/2-30, Relief Valve 1-1/2 NPT, 30 psi (2.1 kg/cm2)
SKU: 182625
McDonnell & Miller
SKU: 182625
Brand: McDonnell & Miller
$929.08 each
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Product Image of 260-1-1/2-50, Relief Valve 1-1/2 NPT, 50 psi (3.5 kg/cm2)
260-1-1/2-50, Relief Valve 1-1/2 NPT, 50 psi (3.5 kg/cm2)
SKU: 182925
McDonnell & Miller
SKU: 182925
Brand: McDonnell & Miller
$959.00 each
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Product Image of 250-3/4-100, Relief Valve 3/4" NPT, 100 psi (7 kg/cm2)
250-3/4-100, Relief Valve 3/4" NPT, 100 psi (7 kg/cm2)
SKU: 181725
McDonnell & Miller
SKU: 181725
Brand: McDonnell & Miller
$179.24 each
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Product Image of 250-1-15, Relief Valve 1" NPT, 15 psi (1 kg/cm2)
250-1-15, Relief Valve 1" NPT, 15 psi (1 kg/cm2)
SKU: 181920
McDonnell & Miller
SKU: 181920
Brand: McDonnell & Miller
$266.60 each
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Product Image of 157S-A-M, Float Type, Combo LWCO & Pump Controller w/ Water Column, w/ Alternate Tappings,w/ Manual reset (Steam)
157S-A-M, Float Type, Combo LWCO & Pump Controller w/ Water Column, w/ Alternate Tappings,w/ Manual reset (Steam)
SKU: 172811
McDonnell & Miller
SKU: 172811
Brand: McDonnell & Miller
$1,803.34 each
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Product Image of 159S-HD, Head Assembly for Combination Low Water Cutoff & Pump Controller w/ 2 SPST switches
159S-HD, Head Assembly for Combination Low Water Cutoff & Pump Controller w/ 2 SPST switches
SKU: 178902
McDonnell & Miller
SKU: 178902
Brand: McDonnell & Miller
$1,437.36 each
In Stock
Get 2 by Mon, Oct 19
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Product Image of 72" G-6-Ss Non-Teflon Ground Probe
72" G-6-Ss Non-Teflon Ground Probe
SKU: 179160
McDonnell & Miller
SKU: 179160
Brand: McDonnell & Miller
$72.62 each
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For over 80 years, McDonnell & Miller has been an industry leader in the engineering and manufacturing of flow switches, low water cut-offs, water feeders, etc. Trust McDonnell & Miller for everything you need to move water.
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