Document QJwkewzGMxjQeojM8YyoXZXd4

Fans, Ventilating De Bothezat Impeller Co., Inc. 1922 Park Avenue, New York, N. Y. Our Fans Do Work In Ducts Against Pressure. It is prejudice to believe that Disc Fans cannot furnish static pressure with very high efficiency. Engineering Data Concerning De Bothezat Pressure Fans Important Notice: We guarantee our fans 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 of the De Bothezat Disc Pressure Fans insures the complete safety of their operation under any conditions to be met in practice. 4 and 48 * Disc Pressure Fan Diam R.P.M. HP. 8' 14'. 18' 24' 30* 36' 42* 48' 1800 3400 850 1140 1750 850 1140 1750 850 1140 600 850 1140 480 690 850 1140 470 580 670 800 370 470 530 630 1/50 i/s .1/20 1/12 1/4 1/15 1/6 1/2 1/4 3/4 1/3 1 2.5 2 5 l 2 3 5 l 2 3 5 CFM. against '/'S.P. 350 700 800 1100 1600 1800 2500 3800 4500 6000 6000 9000 12000 8500 12000 15000 20000 14000 17000 20000 23500 16000 20000 23000 28000 C.F.M. against V,' S.P. 650 900 1450 900 2100 3700 3800 5700 4400 8400 11500 -6000 11000 14500 19500 12000 15500 19000 23000 12000 16000 21000 27000 PERFORMANCES -- C.F.M. against '/'S.P. C.FJU. against W S.P. C.F.M. against W S.P. C.F.M. against y.'s.p. 600 600 1300 1700 3500 2000 5300 2000 7600 11000 2000 9500 14000 19000 9000 14000 16000 22000 7000 15000 20000 26000 550 1150 3300 4900 6600 10500 8000 13000 16500 12000 16500 21000 12000 18000 24500 500 400 850 3100 4200 5500 10000 6000 12000 16000 9000 15000 20000 2800 3000 3000 9500 3500 11000 17500 13000 19000 15000 23000 . 11000 21000 CPM. against I'SP. 2000 8000 8000 17000 16000 15000 C.F.M. against W S.P. . 6000 15500 11000 We furnish disc fans producing static pressures up to 3 inch. Higher pressures by special order. 604 Fans and Ventilating Equipment <(fe: -- CriRFF/1 CITY FUM CD Manufacturers Since 1879 McCormick Building Chicago, 111. Eastern Office: 55 West 42nd Street, New York Fans, Blowers, Exhausters, Unit Heaters, Pressure Blowers, Dust Collecting, Ventilating and Drying Apparatus Cycloidal Multi-Blade Fan Cycloidal Multi-Blade Fan--Sturdy construc tion and designed to de velop an efficiency equal to any fan of this type built. Overhung wheel and overhung pulley types, suitable for Heating, Ven tilating, Drying and Ex hausting. Catalog No. 200 contains complete data. Small Exhaust Fan Small Exhaust Fan^--For exhaust ing refuse, dust and fumes. Made with cast-iron reversible housing. Fitted with pulleys or di rect connected mo tors. Suitable for small jobs of all kinds. Type "A" Propeller Fan Type "A" Propeller Fan-- -For exhausting foul air, steam, smoke, etc. With direct con nected motors or furnished with pulleys for belt drive. Bulletin 310 contains data on various types and all sizes. Standard makes of motors used, ample in size. No overload, no heating and thus no cooling device re quired. Cyclo-Fin Unit Heater--(Industrial Type)--Com pact, sturdy, noiseless and fitted with heavy duty motorsfor severe and continuous industrial service. Heating element copper tubing with fins. Non-corrosive. Made in both suspension and floor types. Cyclo-Fin Data C.F.M. B.t.u. per Hour Equivalent Size Elitering Air Motor H.P. RP.M. 60 deg. Room Temp. 2 Lb. Stm Direct 5 Lb. Stm. 40 Lb. Stm. Radiation 2 Lb. Stm I6A 1350 1/8 1160 60 88,000 100.000 110.000 365 sq. ft. 16A 1900 l/S 1160 60 122,000 128.000 180,000 509*j.ft. 24A 30CC 2900 5200 1/3 1/2 870 60 157.000 172.000 246.000 653 sq. ft. 690 60 332.000 392.000 475.000 1380 sq.ft. Note 1.--Above capacities for single unit. Double capacities for double unit box. Triple capacities for triple unit box. Note 2.--Table covers steam pressures of 2 lb., 5 lb. and 40 lb. steam at heaters. Any steam or hot water pressure may be used up to 50 lb. gauge pressure. ..................... Note 3.--Sizes 18A and 24A have 2 in. supply, in. drip. Size 30CC has 2M in. supply and 1H in. drip on each heater section. Note 4.--For heating outside air use 5 lb. steam or higher pressure. Cyclo-Fin 'Unit Heater Garden City products are a combination of genuine quality and efficiency. Fifty years of experience enables us to furnish "A Fan or Blower for Any Purpose.' A complete set of literature should be in your files. 605