Document bOOwq5ZzeZM3YqQKxYrV4KGg6

Air System Equipment Fans and Blowers PROPELLAIR Inc. 1944 CLARK BLVD. SPRINGFIELD, OHIO VENTILATING SPECIALISTS IN ALL PRINCIPAL CITIES Designed by Propellair to deliver maxi mum air with minimum horsepower. Air flow is even over all of blade--the whole fan works, not just the tips! Non-over loading^--from free air to block-off, horse power is virtually constant as long as motor speed is constant. Number of blades, angle and shape, depend on use. PROPELLAIR VERTI-STACK For Roof Ventilation A fool-proof, auto matic ventilator in stalled easily on roof. Butterfly dampers, within wind guard, offer virtually zero resistance. High velocity, vertical discharge throws heat and fumes far above the roof and prevents rain from entering when the fan. is in operation. Dampers close gently and posi tively when fan coasts to a stop. 12 to 60 in. diameters, with capacities from 2100 to 68,000 cfm. PROPELLAIR EXTENDED-SHAFT FANS For Handling Excessive Heat, Moisture, Fumes, Dust and Gases Type "CE" extended-shaft fans for severe conditions involving excessive heat, moisture, harmful fumes, explosive gases, etc.--where a motor should not operate within air stream. Drive shaft housed and sealed within steel tubing. Special formedsteel ring and support assembly. Fan sizes 12 to 60 in., capacities 2000 to 68,000 cfm. PROPELLAIR DRUM-TYPE Belt-Drive Fans for Heat, Acids, Alkalis, Fumes, Gases or Dust "CS" and "CSV" drum-type, belt-drive fans for severe, heavy-duty jobs involving elements listed for "CE" type. Sturdy, welded drum construction. Motor com pletely isolated from, fan, driving belt protected in steel tube. 20 to 48 in. duct sizes, capacities 2400 to 43,000 cfm. CURVED ENTRANCE RING An Important Propellair Feature In addition to serving as a sturdy support assembly, it reduces tip loss and enables Propellair Fans to deliver maximum air per horsepower. Introduced in 1930 as a result of exhaustive experiments and tests by Propellair engineers, this design makes possible the utilization of the "Airfoil" air-movement principle in the entrance ring as well as in the propeller. PROPELLAIR DIRECT-CONNECTED FANS For Duct, Wall or Hood Installation Type "CD" directconnected fans for wide range of jobs, from free air conditions such as window or panel mountings, to instal lation in roof ventilators, hoods, or duct work involving medium to relatively high resistance. Successful wherever a motor can operate directly within air stream. Sizes 12 to 60 in., capacities 800 to 85,000 cfm. 956 ! Air System Equipment Fans and Blowers B. F. STURTEVANT COMPANY Air Conditioning, Heating, Ventilating, Dust Control and Fume Removal Equipment,. Vacuum Cleaners, Dryers, Compressors, Motors, Turbines, Mechanical Draft Equipment Akron, Ohio Aidant, N. Y. Atlanta, Ga. Baltimore, Md. Boston, Mass. Buffalo, N. Y. Camden, N. J. Chicago, III. Cincinnati, Ohio Cleveland, Ohio Columbus, Ohio Main Office and Works Hyde Park, Boston, Mass. Sales Engineering Offices Dentes, Colo. Des Moines, Iowa Detroit, Mich. El Paso, Texas Greensboro, N. C. Hartford, Conn. Indianapolis, Ind. Jacksonville, Fla. Kansas Cm, Mo. Little Rock, Ark. Los Angeles, Calif. Memphis. Tbnn. Milwaukee, Wta. Minneapolis, Mom. Newark, N. J. New York, N. Y. North Hero, Vt. Phoenix, Abiz. Pittsburgh, Pa. Portland, Orb. Richmond, Va. &r. Louis, Mo. Salt Lake Cm, Utah San Francisco, Calif. Seattle, Wash. Spokane, Wash. Springfield, Mass. 'Stracusb, N. Y. Tampa, Fla Toledo, Ohio Washington, D. C. PLANTS: Located at HYDE PARK. BOSTON, MASS.; LaSALLE, ILL.; CAMDEN, N. J.; BERKELEY, CALIF.; and GALT, ONT. B. F. STURTEVANT COMPANY OF CANADA, LTD., GALT. ONT.; Sales Offices in Toronto and Montreal, and representatives in principal Canadian Cities. COOLING & AIR CONDITIONING D1V. of B. F. Sturtevant Co. is Organized to Engineer and Install Complete Industrial Air Conditioning Systems. OFFICES: Atlanta. Ga.; Hyde Park, Boston. Mass.; Camden. N. J.; Cleveland, Ohio; Greensboro, N. C.; Los Angeles, Calif.; New York. N. Y. HOW STURTEVANT ENGINEERING SERVICE CAN HELP YOU . As the world's largest concern engaged Whether requirements call for a single in the manufacture of Air Handling Equip unit of apparatus or a complete engineered ment, backed by more than 80 years* system, Sturtevant engineers can recom experience, B. F. STURTEVANT COM mend the solution best suited to fulfill your PANY. is exceptionally qualified to help individual needs. Do not hesitate to call you attain the most efficient and eco nomical solution of any air handling problem. Skilled Sturtevant engineering experts, located in many leading cities are prepared to render the following 5-point service: (1) Analyze your problem. (2) Recommend the solution. (3) Specify the equipment. (4) Supervise the installation. the Sturtevant representative nearest you for assistance. Needless to say, no obligation is incurred. As a preliminary aid, we list on the following two pages the major types of equipment manufactured by us, together with their general applications and the (5) Check the operation. reference numbers of catalogs available. ILLUSTRATIONS OF SOME OF THE MAJOR LINES OF STURTEVANT EQUIPMENT Axijio Fan (26) Propeller Fan Design 7 (29) Mtdtivane Fan Design 6 (SO) Speed Beater (40) STURTEVANT EQUIPMENT INDEX AND OTHER ILLUSTRATIONS ON NEXT PAGE 957