Document EdkoE28YQDV1d9x0x755705zV

Boiler Feeders McDonnell &Miller Self-Cleaning Duplex Boiler Feeder McDonnell & Miller General Offices Wrigley Building, Chicago Grand Central Terminal, New York Dependable Boiler Protection: The McDonnell & Miller Self-Cleaning Duplex Boiler Feeder automatically main 3. Large Capacity--full city water pressure is put into the boiler feed line. The feeder will supply the entire requirements of any boiler even when condensation pump is not operating. tains the correct water level in steam, 4. Greatest Simplicity--only one moving unit; vapor or vacuum heating boilers re-. fewer parts more finely made. gardless of how hard the boiler is being 5. Complete oscillating movement on two bronze bearings, in pushed and even in stead of sliding move the event that the .t, I condensation pump ment. Therefore, no possibility of sticking. jl't ii stops. Its action is totally independent of operating skill and Service Conditions: The McDonnell & Miller Self-Cleaning attention. Duplex Feeder is By keeping the adaptable to all low boiler water line pressure heating where it belongs the boiler conditions. McDonnell & Miller The standard type Duplex Feeder is a is suitable for all positive, mechanical boilers up to and in Crotection against urned boilers or cracked sections. cluding 14,500 sq. ft. where differential pressure is 30 lb. or How It operates: City water enters feeder at (A), passes through large strainer and then to valve chamber (B). When boiler water line drops, causing corre sponding drop in float chamber, the float, in dropping, -turns the rotary valve disc, thus opening the supply valve (C), allowing city water to pass through the manifold and into the boiler feed line connected at (D). -. v If condensation returning to the boiler causes water line to rise abnormally, a corresponding rise occurs in feeder float chamber. The float, in rising opens the rotary overflow valve (F) in overflow valve chamber (E). permitting excess water to discharge to sewer at (G). Positive, Continuous Operation: Continuous and dependable operation of the McDonnell & Miller Duplex Boiler Feederis assured by these exclusive features: above. For larger boilers, and where the differential pressure is low the McDonnell & Miller Special Type will be furnished. Maximum allowable steam pressure is 20 lb. Water pressure should always be at least 5 lb. higher than steam pressure. Each feeder is packed in sturdy, indi vidual crate with complete instructions for installation. Typical Specifications: Furnish and install on each (low pressure heat ing) boiler One McDonnell & Miller SelfCleaning Rotary Valve Duplex Boiler Feeder. Rotary Valves to be adjustable to provide for a differential of from one to five inches between feed and overflow levels. 1. Self-Cleaning Valves--cast bronze .discs turn Self-Cleaning Duplex Feeders to have sufficient ing on Monel metal seats which grind and capacity for furnishing the entire amount of'feed clean themselves every time float moves. water required by the boiler when all of the con 2. Full adjustment after installation--permit ting a change in water line of one inch higher or densation is wasted to the sewer, and at*........ lb. steam pressure and_____Jb. dty water pressure. lower, and an adjustment of differentials be Installation to be made in accordance with 1 tween supply and overflow levels of from diagrams and detailed instruction sheet furnished 1 to 5 in. by the manufacturers. 582 Burners, Oil Automatic Burner Corporation 312 North May Street, Chicago, 111. The Automatic Burner Corporation are leading manufacturers of the rotary, inthe-ashpit type of oil burner. This princi pal--now acknowledged to be the simplest and most efficient for domestic oil burning --was originated seven years ago. Thou sands of dollars have been expended in developing ABC, and its little brother, the Heat King, to their present simplicity and economical efficiency. Heat King is the burner for every man-- for every man can afford the Heat King. The Department of Engineering Research, University of Michigan, made some ef ficiency tests on June 15, 1928, with ABC installed in a DuBrie warm air furnace. ABC developed the high efficiency of 84.44 per cent. Heat King is the climax of seven years of concentrated research. Simple, rigidly built, economical to operate. Heat King is the burner, for the man who counts his dollars and demands in return for them guaranteed satisfaction. Write for more detailed information Maximum Steam Radiation Price ABC 3000 $500 to $1000 583 Heat King 800 $350 to $600