mcdonnell miller

Blackhawk Supply offers McDonnell & Miller backflow preventers, pressure-reducing valves, and water-mixing valves. Shop today!

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Mcdonnell Miller 165800 Low Water Cut Off Control 94-AM with Pump Controller Manual Reset 165800 120/240 Voltage Alternating Current | Blackhawk Supply

165800 | Low Water Cut Off Control 94-AM with Pump Controller Manual Reset 165800 120 / 240 Voltage Alternating Current | Mcdonnell Miller

Brand: Mcdonnell Miller

SKU: 165800

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Mcdonnell Miller 164525 Low Water Cut Off Control 193-7BM with Pump Controller Manual Reset 164525 120/240 Voltage Alternating Current | Blackhawk Supply

164525 | Low Water Cut Off Control 193-7BM with Pump Controller Manual Reset 164525 120 / 240 Voltage Alternating Current | Mcdonnell Miller

Brand: Mcdonnell Miller

SKU: 164525

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Mcdonnell Miller 144693 Low Water Cut Off Control with Control Board Harness Model RB-24E-S 24 Voltage Alternating Current | Blackhawk Supply

144693 | Low Water Cut Off Control with Control Board Harness Model RB-24E-S 24 Voltage Alternating Current | Mcdonnell Miller

Brand: Mcdonnell Miller

SKU: 144693

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Mcdonnell Miller 135500 Water Feeder 51B-2M with Low Water Cut Off #2 Switch 135500 1 Inch Threaded 35 Pounds per Square Inch | Blackhawk Supply

135500 | Water Feeder 51B-2M with Low Water Cut Off #2 Switch 135500 1 Inch Threaded 35 Pounds per Square Inch | Mcdonnell Miller

Brand: Mcdonnell Miller

SKU: 135500

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Mcdonnell Miller 137000 Head Mechanism for Water Feeder 53-HD | Blackhawk Supply

137000 | Head Mechanism for Water Feeder 53-HD | Mcdonnell Miller

Brand: Mcdonnell Miller

SKU: 137000

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Mcdonnell Miller 135800 Head Mechanism Water Feeder FDR 51S-HD 35 Pounds per Square Inch | Blackhawk Supply

135800 | Head Mechanism Water Feeder FDR 51S-HD 35 Pounds per Square Inch | Mcdonnell Miller

Brand: Mcdonnell Miller

SKU: 135800

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Mcdonnell Miller 136200 Head Mechanism Replacement for Model 51-S-2-HD Low Water Cut Off 136200 | Blackhawk Supply

136200 | Head Mechanism Replacement for Model 51-S-2-HD Low Water Cut Off 136200 | Mcdonnell Miller

Brand: Mcdonnell Miller

SKU: 136200

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Mcdonnell Miller 123200 Flow Switch AF2 Low Velocity Single Pole Double Throw | Blackhawk Supply

123200 | Flow Switch AF2 Low Velocity Single Pole Double Throw | Mcdonnell Miller

Brand: Mcdonnell Miller

SKU: 123200

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Mcdonnell Miller 119700 Flow Switch Liquid SPDT 1-1/4 Inch 120/240 Volt | Blackhawk Supply

119700 | Flow Switch Liquid SPDT 1-1 / 4 Inch 120 / 240 Volt | Mcdonnell Miller

Brand: Mcdonnell Miller

SKU: 119700

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Mcdonnell Miller 120100 Flow Switch FS7-4E Single Pole Double Throw with NEMA 7/9 Enclosure 1-1/4 Inch NPT | Blackhawk Supply

120100 | Flow Switch FS7-4E Single Pole Double Throw with NEMA 7 / 9 Enclosure 1-1 / 4 Inch NPT | Mcdonnell Miller

Brand: Mcdonnell Miller

SKU: 120100

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Mcdonnell Miller 115200 Flow Switch FS4-3T2-1 Single Pole Double Throw 1 Inch NPT | Blackhawk Supply

115200 | Flow Switch FS4-3T2-1 Single Pole Double Throw 1 Inch NPT | Mcdonnell Miller

Brand: Mcdonnell Miller

SKU: 115200

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Mcdonnell Miller 115300 Flow Switch FS4-3T3-1 Low Flow SPDT 1 Inch NPT | Blackhawk Supply

115300 | Flow Switch FS4-3T3-1 Low Flow SPDT 1 Inch NPT | Mcdonnell Miller

Brand: Mcdonnell Miller

SKU: 115300

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Mcdonnell Miller 114550 Flow Switch FS4-3D with 2 SPDT Switches 1 Inch NPT Vertical | Blackhawk Supply

114550 | Flow Switch FS4-3D with 2 SPDT Switches 1 Inch NPT Vertical | Mcdonnell Miller

Brand: Mcdonnell Miller

SKU: 114550

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Mcdonnell Miller 115652 Flow Switch FS6-W-1 with NEMA 4X Enclosure SPDT 1 Inch NPT | Blackhawk Supply

115652 | Flow Switch FS6-W-1 with NEMA 4X Enclosure SPDT 1 Inch NPT | Mcdonnell Miller

Brand: Mcdonnell Miller

SKU: 115652

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Mcdonnell Miller 114639 Flow Switch FS4-3RP-T Liquid with Test Feature 1 Inch NPT | Blackhawk Supply

114639 | Flow Switch FS4-3RP-T Liquid with Test Feature 1 Inch NPT | Mcdonnell Miller

Brand: Mcdonnell Miller

SKU: 114639

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Mcdonnell Miller 114763 Flow Switch FS5-3/4 with 2 Single Pole Double Throw Switches 3/4 Inch NPT | Blackhawk Supply

114763 | Flow Switch FS5-3 / 4 with 2 Single Pole Double Throw Switches 3 / 4 Inch NPT | Mcdonnell Miller

Brand: Mcdonnell Miller

SKU: 114763

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Mcdonnell Miller 114900 Flow Switch FS4-3T2-3/4 Single Pole Double Throw 3/4 Inch NPT | Blackhawk Supply

114900 | Flow Switch FS4-3T2-3 / 4 Single Pole Double Throw 3 / 4 Inch NPT | Mcdonnell Miller

Brand: Mcdonnell Miller

SKU: 114900

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Mcdonnell Miller 110400 Switch 5-M Electric with Manual Reset 120/240 Volt | Blackhawk Supply

110400 | Switch 5-M Electric with Manual Reset 120 / 240 Volt | Mcdonnell Miller

Brand: Mcdonnell Miller

SKU: 110400

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Mcdonnell Miller 110000 Switch 2 Cutoff Replacement 120/240 Volt | Blackhawk Supply

110000 | Switch 2 Cutoff Replacement 120 / 240 Volt | Mcdonnell Miller

Brand: Mcdonnell Miller

SKU: 110000

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Mcdonnell Miller 180801 Control PFC-1-G-R Reverse Acting Liquid Level 3-15 Pounds per Square Inch Output 1 Inch NPT 250 PSIG | Blackhawk Supply

180801 | Control PFC-1-G-R Reverse Acting Liquid Level 3-15 Pounds per Square Inch Output 1 Inch NPT 250 PSIG | Mcdonnell Miller (OBSOLETE)

Brand: Mcdonnell Miller

SKU: 180801

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Mcdonnell Miller 600206 Diaphragm Kit Main Valve 2200-2300 3 Inch | Blackhawk Supply

600206 | Diaphragm Kit Main Valve 2200-2300 3 Inch | Mcdonnell Miller

Brand: Mcdonnell Miller

SKU: 600206

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Mcdonnell Miller 354411 Gauge Supply for Pneumatic Actuated G-PFC-S | Blackhawk Supply

354411 | Gauge Supply for Pneumatic Actuated G-PFC-S | Mcdonnell Miller (OBSOLETE)

Brand: Mcdonnell Miller

SKU: 354411

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Mcdonnell Miller 354401 Electrode Assembly for RS Series | Blackhawk Supply

354401 | Electrode Assembly for RS Series | Mcdonnell Miller

Brand: Mcdonnell Miller

SKU: 354401

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Mcdonnell Miller 354370 Gasket Cover 4 Hole for RS-1 BR-1 Remote Sensor | Blackhawk Supply

354370 | Gasket Cover 4 Hole for RS-1 BR-1 Remote Sensor | Mcdonnell Miller

Brand: Mcdonnell Miller

SKU: 354370

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KMC BAC-5051AE Router: BACnet, IP/Dual Enet/Single MSTP | Blackhawk Supply

BAC-5051AE | Router: BACnet, IP/Dual Enet/Single MSTP | KMC

Brand: KMC

SKU: BAC-5051AE

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EIBA5-100T/R | 5-Port 10/100Mbps DIN-rail Mount BAS Switch | Contemporary Controls

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Belimo B225+LF120 US CCV | 1" | 2 Way | 30 Cv | w/ Spg Rtn | 120V | On/Off | Blackhawk Supply

B225+LF120 US | CCV | 1" | 2 Way | 30 Cv | w/ Spg Rtn | 120V | On/Off | Belimo

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Siemens GCA161.1U Damper Actuator | Spring Return | 24 VAC/DC | 0-10 Vdc | 160 lb-in | Blackhawk Supply

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Belimo S2A Auxiliary switch | 2x SPDT | 3A (0.5A inductive) @ 250 VAC max. | Blackhawk Supply

S2A | Auxiliary switch | 2x SPDT | 3A (0.5A inductive) @ 250 VAC max. | Belimo

Brand: Belimo

SKU: S2A

Square D SDSA2040 SPD T1 SDSA 40KA 120/208V 3P4W | Blackhawk Supply

SDSA2040 | SPD T1 SDSA 40KA 120/208V 3P4W | Square D

Brand: Square D

SKU: SDSA2040

Viconics VT7225 Room Controller Heating Analog Output and PWM Output; Replaces C1025 & T920 | Blackhawk Supply

VT7225 | Room Controller Heating Analog Output and PWM Output; Replaces C1025 & T920 | Viconics

Brand: Viconics

SKU: VT7225