• Field-adjustable dwell-feed cycles
• Multi color LED status indicator
• Manual feed button
• Hard-stop limit to minimize chances of flooding the boiler
• Compatible with all electronic and mechanical low water cut-off
• Includes adapters for connection to 1/2" copper tubing
• Removable strainer

McDonnell & Miller B112-7

• Universal design serves the widest variety of applications
• Replacement for common flow switches from johnson/penn, potter/taco, watts, hydrolevel and other manufacturers
• Two electrical knock-outs allows connection from either end
• Sensitivity adjusting screw makes flow adjustment easy
• Hardened stainless steel bearings minimize friction
• Sealed monel bellows
• Materials of construction suitable for corrosive liquids
• Includes: (4) 1, 2, 3 and 6" stainless steel paddles

• Eliminates necessity to manually add water to the boiler
• Can be used with mechanical or electronic low water cut-off controls
• Quick-change replaceable cartridge valve and strainer
• Manual feed butTon
• 40 VA transformer

McDonnell & Miller B112-8

• Adjustable Bx outlet for easy installation
• Dual precision switches for dependable operation of cut-off, alarm or electric water feeder
• Packless bellows
• Millivolt circuits

McDonnell & Miller B106-4

McDonnell & Miller B115

• Lockout delay
• Power interruption
• Self cleaning probe
• No lock out with loss of power if probe is in water
• Green LED indicates power on
• Red LED indicating low water condition
• 7000 ohm probe sensitivity

• Quick hook-up fittings provided
• Lever-operated, full port ball valve for easy blow down
• Adjustable Bx outlet for easy installation
• Dual precision switches for dependable operation of cut-off, alarm or electric water feeder

McDonnell & Miller B120

McDonnell & Miller B122

• Model SA47-101-102

McDonnell & Miller B123-1