Document KJ2N9Q92V2wbVLyDyxNnLqJbr

Fans and Ventilating Equipment De Bothezat Impeller Co., Inc. Manufacturers of De Bothezat Disc Pressure Fans, Blowers and Air Conditioning Equipment 1922 Park Avenue, New York, N. Y. Branch Offices and Representatives in All Principal Cities Foreign Office WEBB DUST REMOVING A DRYING CO., Ltd.. Stockport. England ASANO BUSSAN CO., Ltd., Tokio, Osaka, Japan; Shanghai, China ALFREDO DELANO, Santiago, Chili, South America KRUGER. Ltd., Union South Africa De Bothezat Fans are guaranteed to have a non-overloading power characteristic, that is, to absorb at constant revolutions practically the same power whatever the static pressure under which they are operating for the whole range between free delivery and no delivery. This important property insures the complete safety of their operation under any conditions to be met in practice: ' De Bothezat Pressure Fans made in all sizes from 8 in. to 10 ft. Motors for these fans are furnished from ^o hp. to 100 hp. The capacities of the fans run from 350 c.f.m. to 254,000 c.f.m. Static pressure from ^ in. to 3 in. High efficiency and large air volume, together with high pressure characteristics are a few of several qualities which distinguish De Bothezat Disc Pressure Fans. The* Bifurcator For special Ventilating jobs where fumes of exces sive temperature or cor rosive character are to be removed. The bifurcator is a de vice that permits the use of a straight-way duct. It eliminates right, angle bends and long shaft con nections, at the same time protecting and automati cally cooling the motor. The fan chamber is stream lined in section, and the bifurcated duct is not re duced in area at this point.. GIANT FAN--Sisea from 5 ft to 10 ft Powers from 2 hp. to 100 hp. Volume from 16,000 c.f.m. to 254,000 c.f.m. Static Pressure from 3to 3 in. Spud from 175 r.p.m. to 700 r.p.m. Fan and motor mounted on tame bate teeuring perfect alignment. Requires minimum;' floor space. Chain driven, texrope drive, or directly connected THE BIFURCATOR Full details on request. 48 in. DISC PRESSURE FAN 6 hp. 680 r.p.m. 15,000 c.f.m. against 1-in. t.p. and 28,000 c.f.m. against fain. t.p.. Impeller Blower The Impeller Blower is a new type of multiple stage disc fan. This type offan constitutes a long sought solution of the multiple, stage disc fan arrangement. The Impeller Blower has a very high efficiency and is capable of developing high pressure and attaining high air deliveries at low R.P.M. The Impeller-Blower has been designed to exceed the per formance range of the average blower. Beginning with capaci 30 in. DISC PRESSURE FAN 2 hp.. 1110 r.p.m., 8,000 c.f.m. against 1-in. t.p. and I2,000c.f.m against fain. t.p. ties of a few hundred c. f. m. at in.'s, p. Impeller-Blowers can exceed deliveries of 1,000,000 c.f.m. at pressures in excess of 20 in. of water col umn, thus keeping within very reason able size limits. 636 Fans and Ventilating Equipment Diehl Manufacturing Company Electrical Division of THE SINGER MANUFACTURING CO. Elizabethport, New Jersey QUALITY FAN AND MOTOR MANUFACTURERS SINCE 1888 District Offices Atlanta, Ga Boston. Mass.-- Chicago. Ill Columbus, Ohio. .....172 Trinity Ave., S.W. ...... 75 Kneeland St ......1017 W. Jackson Blvd. ,...506 Clinton Bldg. Dallas, Texas___ _______ ___________ 324 Santa Fe Bldg. New York, N. Y........ ......... ........................... 95 Liberty St Philadelphia, Pa................................. ,,112 North 12th St. St. Louis, Mo...................... ..... 1409 Syndicate Trust Bldg. Sales Representatives in all Principal Cities High Spud Exhaust Fan Low Spud Exhaust Fan Win<U)-Vent Diehl offers a complete line of ventilating and exhaust fans for use in restaurants, hotels, hospitals, kitchens, garages, auditoriums, in dustrial plants, dye houses and other locations where efficient,, eco nomical movement of air is required. The design and construction embody modern engineering practices which result'in exceptionally sturdy units that will give many years of service under severe operating conditions. Several types of fans are regularly furnished, in sizes ranging from 9-in. to 48-in. in diameter, with capacities from 600 to 19,000 cu. ft. of air per minute. They are powered by especially developed, cool operating, totally enclosed, highly efficient motors which require only infrequent lubrication. HIGH SPEED EXHAUST FANS--18 to 48-In. The high speed type fans are recommended for all general applications such as restaurants, garages, dye houses, industrial plants and all other installations where the maximum volume of air is desired for a given size of fan. Since extreme quietness of operation is not essential for these applications, a considerably greater air movement is obtained by the use of a high speed type fail. This fan is furnished with.broad, deep pitch bl.ades,-expressly designed for extremely large-air move ment. .The use of this fan with a duct 15 to 20 ft. long is permissible provided the duct is not smaller in diameter than the fan wheel. In such cases the air delivery will be reduced. LOW SPEED EXHAUST FANS--18 to 60-fn. When the quietness of operation is of primary importance,'the low speed design exhaust fan is recommended. It is equipped with bucket shaped, pressed steel fan blades which effectively move a large volume of air without objectionable noise, due to the relatively low speed.. This fan is especially suitaible. for offices, schools, churches and similar applications. Low speed fans should never be installed in connection with duct systems. FLAT BLADE VENTILATING FANS--9-12-16-In. Diehl Flat Blade Ventilating Fans are suitable for removing smoke, impure air, and objectionable odors from offices, kitchens, lavatories, etc. May be readily installed in transoms, window frames or par titions, providing excellent ventilation at small expense. BUCKET BLADE VENTILATING FANS--4-12-15-In. Diehl Bucket Blade Ventilating Fans are intended for use where:the maximum volume of air is to be moved and space for a.fan is limited. In:proportion to their size these fans handle a comparatively large volume of air,1 possessing the same general characteristics as ..large type exhaust fans. WIND-O-VENT. VENTILATORS The Wind-O-Vent wall cabinet is an efficient ventilating unit which quietly removes cooking odors, smoke, steam, etc., from kitchens or other rooms. They may be furnished either as illustrated or with window panels for mounting directly in windows. 637