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This is an NOS McDonnell control unit. Model 47 also has the optional Model 2 switch included. Both are in excellent condition! Combination float type water feeder, with quick hook-up connections for steam or hot water boilers. Proportional feed action, continuous maintenance of minimum safe water level independent of electrical service. Maximum pressure is 150 psi water and 25 psi steam. Be sure to add me to your favorites list! (Mcdonnell no 47 boiler water control & no 2 switch is the responsibility of Billie Benjamin) |
Billiebenjamin@cedar--rapids.com (Billie Benjamin) for more information.
