Document qmMbqQypwoNVXy2ygokqrwOmM

Domestic Engineering 1900 Prairie Avenue Chicago Publications section as a sepa T,HE Automatic Heat and Air Conditioning Section of DOMESTIC ENGINEERING has had an unusually interesting career. Starting in 1931 with a few articles, it developed into a department, and, as its importance increased, it grew into a special rate publication went to 1,000 of these special dealers. Later other advertisers, realizing the importance of this separate distribution, which is in addition to the regular distribution as part of DOMESTIC ENGI NEERING, added their lists of special dealers. section. At the present time, in addition Later, requests ' came from ad-' to its more than 15,000 circulation vertisers to send reprints of this in DOMESTIC ENGINEERING, section to lists of their special it goes to over 9,000 special dealers dealers, which included exclusive in automatic heating and air con oil burner dealers, coal stoker ditioning equipment every month, dealers', dealers in air conditioning giving advertisers in the section equipment, gas fired boiler dealers, blanket coverage of their market. and to other dealers outside of the This gives advertisers a blanket regular heating trade. coverage of over 24,000 at . the The first distribution of this lowest available cost per thousand. 726 0JMS PUMPS Decatur Pump Company Decatur, 111 Pumps ailMs PUMPS Oaf OBmmrifagpa*t BURKS SUPER TURBINE PUMPS AND WATER SYSTEMS Self Priming High Head Units High Efficiency. Open-Impeller Type. Self Priming Centrifu gal Pumps that are DIFFERENT! Capacities to 400 G.P.M. Built up to an Engineering Ideal. Burks Self Priming Centrifugal Pumps BURKS CONDENSATION RETURN UNITS Will Not Steambind! Construction Features Ability to pump air alone, or air mixed with water, to the full pressure rating of the pump, means that the Burks pump will not steambind. Pump capacities range from 150 gph to 1,000 gph against boiler pressures up to 100 lbs. per square inch, and will take care of up to 12,000 sq. ft., of radiation per unit. Hydraulically Balanced These pumps are hydraulically balanced and cannot be made to pound or hammer under any condition of operation. Only one moving part--the impeller-- and this one part does not contact with metal at any stage of operation. Self-priming and .fully automatic. Im peller and raceway 'of cast bronze. Shaft of stainless, non-corroding steel, impervious to mild acids, and carried in oversize ball bearings. Tank of copper-bearing steel, shell; J^-in. top and bottom, welded con struction. Series 4700 Condensation Return Unit A SATISFACTORY CONDENSATION RETURN UNIT TO INSTALL 727 N /*