• No more trips to the basement to add water to the boiler
• Works with all probe and float type low water cut-offs
• Brightly illuminated feed counter displays the amount of water added to the boiler
• Built-in memory prevents power interruptions from clearing the counter
• Helps prevent flooded boilers, allows time for condensate to return to the boiler before starting a feed cycle
• Six settings provide two ways to feed
• 1 - 5 Gallon settings now feed above the probe to restore the boiler's normal operating level or select LWCO setting to end the feed cycle
• Allows for additional make-up water at the touch of a button, manual feed amounts are recorded and added to the totalGallons displayed by the feed counter
• If one feed cycle is not sufficient to restore boiler operation, the VxT will delay and feed one additional cycle
• Digital feed counter
• 30 sec to 10 min programmable feed delay settings
• LWCO and 1 - 5 Gallon programmable feed amount settings
• Manual feed button
• Underfeed protection
• Lock-out flood protection
• 1 gpm flow rate
• 10 VA power consumption

• Full ported ball action valve
• PTFE seats provide bind free, leak tight ball movement
• Easy open handle keeps hands away from hot water and steam
• Gasket and mounting screws included
• For hot water and steam boilers

McDonnell & Miller B122-2

• 1-piece unit that facilitates installation and ensures the most up-to-date construction
• Complete float and dual switch assembly

Watts Water B121-1

• 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

• Electronic operation, easy to install and wire
• Red low water indicating LED, green power indicating LED
• Automatic reset and now with test butTon
• 20000 ohm probe sensitivity
• NEMA 1 enclosure

McDonnell & Miller RB-122

• No lock out with loss of power if probe is in water
• Test butTon
• Green LED indicates power on
• Red LED indicates low water
• 20000 ohm probe sensitivity
• With standard probe

• 125 VA pilot duty rating
• 4-1/8" length insertion
• Packless bellows
• Dual precision switches for dependable operation of the low water cut-off and an alarm or electric water feeder
• For mounting in 2-1/2" NPT boiler side tappings
• Adjustable Bx outlet for easy installation

McDonnell & Miller B106

• 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

• 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

• Combustion pressure switch check feature and communication interface capability
• Heavy duty electro-mechanical design for long life
• Automatically re-energizes circuit upon return to safe water level
• Equipped with shorter probe for mounting in standard reducing tees
• SPDT switch contact
• Includes shorter EL1214-SV probe suitable for mounting in standard black tee