McDonnell & Miller
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165200 McDonnell & Miller High Pressure Level Control 94
McDonnell & Miller
$1,947.95165200 McDonnell & Miller High Pressure Level Control 94. Mcdonnell & Miller Submittal Sheet Features For commercial and industrial low or high pressure steam boilers Maintains consistent water level regardless of pressure For boilers...- Availability:
- This Item Usually Ships The Same Day!
- Weight:
- 53.00 LBS
$1,947.95 -
163100 McDonnell & Miller 93-7B-M Low Water Cut-Off
McDonnell & Miller
$2,321.95163100 McDonnell & Miller 93-7B-M Low Water Cut-Off. McDonnell & Miller LWCO Instruction Manual Features: For commercial and industrial low or high pressure steam boilers Maintains consistent water level regardless of pressure For...- Availability:
- This Item Usually Ships The Same Day!
- Weight:
- 36.00 LBS
$2,321.95 -
176214 McDonnell & Miller 751P-MT-U-120 LWCO
McDonnell & Miller
$348.95176214 McDonnell & Miller 751P-MT-U-120 LWCO. Mcdonnell & Miller Series 751P/752P LWCO Brochure Mcdonnell & Miller Series 751P/752P LWCO Instruction Manual The Series 751P/752P probe type LWCOs provide protection...- Availability:
- This Item Usually Ships The Same Day!
- Weight:
- 5.00 LBS
- Manufacturer:
- Mcdonnell & Miller
- Model:
- 750P-MT-U-120
- Part Number:
- 176214
- Application:
- Steam Boilers and Hot Water Boilers
- Connection Size:
- 3/4"
- Connection Type:
- NPT
- Max Steam Pressure:
- 15 psi
- Max Water Pressure:
- 160 psi
- Max Water Temp:
- 250*F
- Max Ambient Temp:
- 135*F
- Voltage:
- 120v, 240v
- Installation Method:
- Direct To Boiler Tappings
- Reset Type:
- Manual
- Enclosure:
- NEMA 1
- Ohms Sensitivity:
- 20,000 ohm
$348.95 -
304200 McDonnell & Miller Head Gasket 10PK
McDonnell & Miller
$178.95304200 McDonnell & Miller Head Gasket 10PK. This Item Usually Ships The Same Day!- Availability:
- This Item Usually Ships The Same Day!
- Weight:
- 1.00 LBS
$178.95 -
135900 McDonnell & Miller 51-S-2 Mechanical Water Feeder
McDonnell & Miller
$1,728.95135900 McDonnell & Miller 51-S-2 Mechanical Water Feeder. Mcdonnell & Miller 135900 Instruction Manual Features: For high capacity [up to 35,000 sq. ft. (3250m2)] low pressure steam and hot water boilers with cold water feed Optional...- Availability:
- This Item Usually Ships The Same Day!
- Weight:
- 38.00 LBS
$1,728.95 -
133400 M&M Mechanical Water Feeder W/Out Quick Hook Up Fittings
McDonnell & Miller
$1,114.95133400 M&M Mechanical Water Feeder W/Out Quick Hook Up Fittings. *Please. note image is generic. This Item Usually Ships The Same Day!- Availability:
- This Item Usually Ships The Same Day!
- Weight:
- 29.00 LBS
$1,114.95 -
354081 McDonnell & Miller PA-800 Probe Assembly
McDonnell & Miller
$114.95354081 McDonnell & Miller PA-800 354081 -Probe Assembly for 750, 750-MT-120, PS800, PS801, PS850, PS851. This Item Usually Ships The Same Day!- Availability:
- This Item Usually Ships The Same Day!
- Weight:
- 2.00 LBS
$114.95 -
311200 McDonnell & Miller 21-30 Replacement Float for 21
McDonnell & Miller
$538.95311200 - McDonnell & Miller 21-30 Replacement Float for 21. Click here for more info on Mcdonnell Miller Mechanical Level & Boiler Controls For boiler receiver tanks Float operated Proportional feed action Soft seat provides positive...- Availability:
- This Item Usually Ships The Same Day!
- Weight:
- 2.00 LBS
$538.95 -
127200 McDonnell & Miller 27-W Make-Up Water Feeder
McDonnell & Miller
$1,873.95127200 McDonnell & Miller Make-Up Water Feeder Model 27-W. Features: For commercial and industrial liquid level open tank applications Materials of construction: Brass, Monel valve seat, EPDM disc Maximum pressure 35 psi (2.5 kg/cm2) Maximum...- Availability:
- This Item Usually Ships The Same Day!
- Weight:
- 9.00 LBS
$1,873.95 -
144694 McDonnell & Miller RB-24E-A Low Water Cut Off
McDonnell & Miller
$224.95144694 McDonnell & Miller RB-24E-A Low Water Cut Off. This Item Usually Ships The Same Day!- Availability:
- This Item Usually Ships The Same Day!
- Weight:
- 2.00 LBS
$224.95 -
135600 McDonnell & Miller Mechanical Water Feeder 51-S
McDonnell & Miller
$1,621.95135600 McDonnell & Miller Mechanical Water Feeder 51-S. Mcdonnell & Miller 135600 Instruction Manual Features: For high capacity [up to 35,000 sq. ft. (3250m2)] low pressure steam and hot water boilers with cold water feed Optional...- Availability:
- This Item Usually Ships The Same Day!
- Weight:
- 37.00 LBS
$1,621.95 -
120301 McDonnell & Miller FS7-4WL - 1-1/4" Flow Switch
McDonnell & Miller
$684.95120301 McDonnell & Miller FS7-4WL - 1-1/4" Flow Switch w/NEMA 4X Enclosure & Extended Paddle & Paddle Arm. Information: 120301 Mcdonnell & Miller Instruction Manual Features: For applications requiring a water-tight, dust-tight...- Availability:
- This Item Usually Ships The Same Day!
- Weight:
- 13.00 LBS
$684.95 -
119900 McDonnell & Miller FS7-4L - 1-1/4" Flow Switch
McDonnell & Miller
$568.95119900 McDonnell & Miller FS7-4L - 1-1/4" Flow Switch With Extended Paddle & Paddle Arm 119900. Information: McDonnell & Miller FS7 Overview McDonnell & Miller FS7 Instruction Manual Features: Universal design serves the widest...- Availability:
- This Item Usually Ships The Same Day!
- Weight:
- 6.00 LBS
$568.95 -
119750 McDonnell & Miller FS7-4D - 1-1/4" Flow Switch
McDonnell & Miller
119750 McDonnell & Miller FS7-4D - 1-1/4" Flow Switch With /2 SPDT. McDonnell & Miller FS7 Overview McDonnell & Miller FS7 Instruction Manual Features: Universal design serves the widest variety of large pipe applications, including...- Availability:
- This Item Usually Ships The Same Day!
- Weight:
- 3.00 LBS
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115200 McDonnell & Miller FS4-3T2-1 - 1" Flow Switch
McDonnell & Miller
$314.95115200 McDonnell & Miller FS4-3T2-1 - 1" Flow Switch With NPT Body Medium Flow Rate 115200. McDonnell & Miller FS4 Instruction Manual Features: For starting or stopping electrically operated equipment such as signal lights, alarms,...- Availability:
- This Item Usually Ships The Same Day!
- Weight:
- 3.00 LBS
$314.95 -
120605 McDonnell & Miller FS8-WZ Flow Switch 1 NPT
McDonnell & Miller
120605 McDonnell & Miller FS8-WZ Flow Switch 1 NPT. *Please note image is generic. Information: Mcdonnell & Miller 120601 Instruction Manual Features: For general purpose applications with environmental exposure, or those requiring...- Availability:
- This Item Usually Ships The Same Day!
- Weight:
- 3.00 LBS
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153927 McDonnell & Miller PSE-802-RX2-24 LWCO
McDonnell & Miller
$408.95The series 153927 McDonnell & Miller PSE-802-RX2-24 Low Water Cut Off. This Item Usually Ships The Same Day!- Availability:
- This Item Usually Ships The Same Day!
- Weight:
- 4.00 LBS
$408.95 -
129702 McDonnell & Miller LWCO 42S-A Pump Controller
McDonnell & Miller
$1,298.95129702 McDonnell & Miller LWCO 42S-A Pump Controller. 129702 McDonnell & Miller LWCO 42S-A Pump Controller Instruction Manual For residential, commercial, and industrial low and medium pressure steam boilers with a separate water column For...- Availability:
- This Item Usually Ships The Same Day!
- Weight:
- 23.00 LBS
$1,298.95 -
137200 McDonnell & Miller Mechanical Water Feeder 53-2M
McDonnell & Miller
$1,752.95137200 McDonnell & Miller Mechanical Water Feeder 53-2M. For low pressure steam and hot water boilers larger than 5,000 sq. ft. (465m2 ) with hot or cold water feed Optional features No. 2 switch Manual reset Float block Proportional...- Availability:
- This Item Usually Ships The Same Day!
- Weight:
- 39.00 LBS
$1,752.95 -
136900 McDonnell & Miller Mechanical 53 Water Feeder
McDonnell & Miller
$1,579.95136900 McDonnell & Miller Mechanical 53 Water Feeder. Features: For low pressure steam and hot water boilers larger than 5,000 sq. ft. (465m2 ) with hot or cold water feed Optional features No. 2 switch Manual reset Float...- Availability:
- This Item Usually Ships The Same Day!
- Weight:
- 39.00 LBS
$1,579.95 -
176296 McDonnell & Miller 752-MT-24 Low Water Cut Off
McDonnell & Miller
$312.95176296 McDonnell & Miller 752-MT-24 Low Water Cut Off. Information: Product Brochure This Item Usually Ships The Same Day!- Availability:
- This Item Usually Ships The Same Day!
- Weight:
- 3.00 LBS
$312.95 -
313600 McDonnell & Miller 37A-130 Replacement Float for 847 and 851
McDonnell & Miller
$412.95313600 McDonnell & Miller 37A-130 Replacement Float for 847 and 851. This Item Usually Ships The Same Day!- Availability:
- This Item Usually Ships The Same Day!
- Weight:
- 3.00 LBS
$412.95 -
165900 McDonnell & Miller 94M LWCO & Pump Controller
McDonnell & Miller
$1,947.95165900 McDonnell & Miller Level Control 94M. Information: Mcdonnell & Miller Submittal Sheet Features For commercial and industrial low or high pressure steam boilers Maintains consistent water level regardless of pressure For...- Availability:
- This Item Usually Ships The Same Day!
- Weight:
- 53.00 LBS
$1,947.95 -
162500 McDonnell & Miller High Pressure Level Control 93-M
McDonnell & Miller
$1,646.95162500 McDonnell & Miller High Pressure Level Control 93-M. Information: McDonnell & Miller Submittal Sheet Features For commercial and industrial low or high pressure steam boilers Maintains consistent water level regardless of...- Availability:
- This Item Usually Ships The Same Day!
- Weight:
- 36.00 LBS
$1,646.95 -
120175 McDonnell & Miller FS7-4SE - 1-1/4" Flow Switch
McDonnell & Miller
120175 McDonnell & Miller FS7-4SE - 1-1/4" Flow Switch With Stainless Steel Body And NEMA 7 & 9 Enclosure. Mcdonnell & Miller 120175 Instruction Manual Features: For hazardous environment applications requiring a NEMA 7 (Class I,...- Availability:
- This Item Usually Ships The Same Day!
- Weight:
- 11.00 LBS
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114795 McDonnell & Miller FS5-S-1 - 1" Flow Switch
McDonnell & Miller
$1,096.95114795 McDonnell & Miller FS5-S-1 - 1" Flow Switch With Stainless Steel Body 114795. McDonnell & Miller FS5 Instruction Manual Features: In-line configuration eliminates need for a pipe tee Sizes available: 3/4" NPT, 1" NPT Materials...- Availability:
- This Item Usually Ships The Same Day!
- Weight:
- 3.00 LBS
$1,096.95 -
114765 McDonnell & Miller FS5-J-3/4 - 3/4" Flow Switch
McDonnell & Miller
114765 McDonnell & Miller FS5-J-3/4 - 3/4" Flow Switch. McDonnell & Miller FS5 Instruction Manual Features: In-line configuration eliminates need for a pipe tee Sizes available: 3/4" NPT, 1" NPT Materials of construction: Brass, carbon...- Availability:
- This Item Usually Ships The Same Day!
- Weight:
- 3.00 LBS
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172815 McDonnell & Miller LWCO 157S-RLM
McDonnell & Miller
$1,857.95172815 McDonnell & Miller LWCO 157S-RLM. Please Contact Us For Lead Time.- Availability:
- This Item Usually Ships The Same Day!
- Weight:
- 42.00 LBS
$1,857.95 -
173603 McDonnell & Miller 157S-MD Hi Pressure Level Control
McDonnell & Miller
$1,408.95173603 McDonnell & Miller 157S-MD Hi Pressure Level Control. McDonnell & Miller 150S/157S Instruction Manual Specifications For boilers of any steaming capacity Model 173603 - 157S-MD Monel bellows provides corrosion resistance Snap...- Availability:
- This Item Usually Ships The Same Day!
- Weight:
- 45.00 LBS
$1,408.95 -
175402 McDonnell & Miller 157S-M Hi Pressure Level Control
McDonnell & Miller
175402 McDonnell & Miller 157S-M Hi Pressure Level Control. *Please note this item is discontinued and replaced by the 172812 McDonnell & Miller 157S-M Hi Pressure Level Control. Information: McDonnell & Miller 150S/157S Instruction...- Availability:
- This Item Usually Ships The Same Day!
- Weight:
- 45.00 LBS
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149700 McDonnell & Miller Mechanical LWCO 67-M
McDonnell & Miller
**Discontinued 149700 McDonnell & Miller Mechanical Low Water Cut Off 67-M. Float Type Low Water Cut Off For Millivolt Service. P/N's 149400 and 354001 are the equivalent to P/N 149700. Information: McDonnell & Miller LWCO...- Availability:
- This Item Usually Ships The Same Day!
- Weight:
- 12.00 LBS
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134700 McDonnell & Miller Mechanical Water Feeder 51
McDonnell & Miller
$1,354.95134700 McDonnell & Miller Mechanical Water Feeder 51. For low pressure steam and hot water boilers larger than 5,000 sq. ft. (465m2) capacity with cold water feed Quick-change replaceable cartridge valve and strainer Optional...- Availability:
- This Item Usually Ships The Same Day!
- Weight:
- 36.00 LBS
$1,354.95 -
153827 LWCO McDonnell & Miller PSE-801-120 Probe Control
McDonnell & Miller
$324.95The Series 153827-LWCO McDonnell & Miller PSE-801-120 Probe Control type LWCO uses patented technology to monitor changes in water conductivity. When defined parameters are exceeded the new PSE-800 makes a decision to shut the burner off based...- Availability:
- This Item Usually Ships The Same Day!
- Weight:
- 3.00 LBS
$324.95 -
153828-LWCO - McDonnell & Miller PSE-801-U-120 Probe Control
McDonnell & Miller
$358.95The Series 153876 - McDonnell & Miller PS-801-U-120 Probe Control type LWCO uses patented technology to monitor changes in water conductivity. When defined parameters are exceeded the new PSE-800 makes a decision to shut the burner off based on...- Availability:
- This Item Usually Ships The Same Day!
- Weight:
- 3.00 LBS
$358.95 -
135100 McDonnell & Miller 51-2-HD Head Mechanism
McDonnell & Miller
$1,407.95135100 McDonnell & Miller 51-2-HD Head Mechanism for Mechanical Water Feeder. This Item Usually Ships The Same Day!- Availability:
- This Item Usually Ships The Same Day!
- Weight:
- 19.00 LBS
$1,407.95 -
115100 McDonnell & Miller FS4-3T1-1 - 1" Flow Switch
McDonnell & Miller
115100 McDonnell & Miller FS4-3T1-1 - 1" Flow Switch With NPT Body High Flow Switch. McDonnell & Miller FS4 Instruction Manual Features: For starting or stopping electrically operated equipment such as signal lights, alarms, motors,...- Availability:
- This Item Usually Ships The Same Day!
- Weight:
- 3.00 LBS
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164400 McDonnell & Miller 193-7B LWCO & Pump CTRL. w/ Potentiometer
McDonnell & Miller
$2,651.95164400 McDonnell & Miller 193-7B LWCO & Pump CTRL. w/ Potentiometer. Information: McDonnell & Miller LWCO Instruction Manual Features: For commercial and industrial low or high pressure steam boilers Maintains consistent water...- Availability:
- Please Contact Us For Lead Time!
- Weight:
- 52.00 LBS
$2,651.95 -
144693 McDonnell & Miller RB-24E-S Low Water Cut Off
McDonnell & Miller
$184.95144693 McDonnell & Miller RB-24E-S Low Water Cut Off. This Item Usually Ships The Same Day!- Availability:
- This Item Usually Ships The Same Day!
- Weight:
- 2.00 LBS
$184.95 -
177251 McDonnell & Miller 157S-RLS-M-MD
McDonnell & Miller
$1,557.95177251 McDonnell & Miller 157S-RLS-M-MD Hi Pressure Level Control. McDonnell & Miller 150S/157S Instruction Manual Specifications For boilers of any steaming capacity Monel bellows provides corrosion resistance Snap action switches for...- Availability:
- This Item Usually Ships The Same Day!
- Weight:
- 47.00 LBS
$1,557.95 -
172813 McDonnell & Miller 157S-M-MD Hi Pressure Level Control
McDonnell & Miller
$1,418.95172813 McDonnell & Miller 157S-M-MD Hi Pressure Level Control. McDonnell & Miller 150S/157S Instruction Manual Features For boilers of any steaming capacity Model 175412 - 157S-M-MD Monel bellows provides corrosion resistance Snap...- Availability:
- This Item Usually Ships The Same Day!
- Weight:
- 45.00 LBS
$1,418.95
Boiler Controls. McDonnell & Miller Low Water cut-offs are specially designed to protect steam and hot water boilers from the hazards of a low water condition. In operation they will interrupt the electrical current to the firing device, if the water in the system drops below the boiler manufacturer’s minimum safe water level. Our low water cut-offs also provide an additional circuit for a low water alarm, should you desire to install one, for additional protection.
If you have any questions please give us a call at 1-800-781-7405 or email us your request. Sales@NationalPumpSupply.com
