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McDonnell Miller
Series 247/247-2

• For steam and hot water boilers with cold water feed
• Continuous maintenance of minimum safe water level

McDonnell Miller
Series AF3

• For general purpose low velocity applications where the most economical flow switch is desired
• Paddle fits 8” (203mm) minimum duct size
• Two electrical knock-outs allow...

McDonnell Miller
Series 63

• For residential, commercial, and industrial applications

McDonnell Miller
Series 51/51-2

• For low pressure steam and hot water boilers larger than 5,000 sq. ft. (465m2) capacity with cold water feed

McDonnell Miller
Series FS250

• Universal design serves the widest variety of applications
• For starting or stopping electrically operated equipment such as signal lights, alarms, motors, automatic burners, metering...

McDonnell Miller
Series 64

• Adjustable BX outlet for easy installation
• Dual precision switches for dependable operation of the low water cut-off and alarm or electric water feeder

McDonnell Miller
Model 64-A

• Quick hook-up fittings provided for installation directly

McDonnell Miller
Series 51-S/51-S-2

• For high capacity [up to 35,000 sq. ft. (3250m2)] low pressure steam and hot water boilers with cold water feed

McDonnell Miller
Series 1575

• Primary low water fuel cut-off protection and pump control for commercial and industrial steam boilers

McDonnell Miller
Series 764

• For residential, commercial, and industrial boiler

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