Document 3eOgQnM55Q10dddZ1k6w2Vknn

Air System Equipment . Iaq;i^dJentiktic THE NEW YORK BLOWER COMPANY GENERAL OFFICES 32nd STREET ft SHIELDS AVENUE CHICAGO- H FACTORIES AT IAPORTI, INDIANA AND CHICAGO, Illinois Representatives in Principal Cities FANS BLOWERS UNIT HEATERS MAKE-UP AIR UNITS AIR WASHERS HEAVY DUTY HEAT SURFACE Make-up Comet Unit Heaters Heavy duty, welded steel, fin- and-tube heating element. Suitable for continuous heating service on steam pressures up to 150 lb or more. 10 sizes with capac ities from 30 Mbh to 490 Mbh. Bulletin 485. Ml5--15,000 cfm A unit that delivers, warmed, filtered,, outside air to industrial spaces to re place exhausted air and balance minus pressure. Corrects drafty conditions and uncontrolled infiltration. Made in 4 sizes from 5,000 cfm to 20,000 cfm. Described in Bulletin 502. Type ME Centrifugal Fans Capacities up to 101,000 CFM Comet Exhaustair Delivers large vol umes of air at low re sistance and low cur rent consumption. All wheels are machine balanced for smooth, vibrationless opera tion. Made in two types and eight basic sizes. Wheel diam eters from 12 in. to 48 in. Direct or belted drive. Capacities from 400 cfm to 23,500 cfm. Askfor Bulletin 494' Slow speed wheels .offered from 71 to 73 in. Capacities up to 123,000 cfm. Quiet operating (PL) medium speed wheels with non overloading horse power characteristics for heating, ven tilating and air conditioning or industrial applications. Wheel diameters from 18 in. to 73 in., with any speed or discharge required. Class I, II, III or IV con struction. Write for Bulletin 498. Steelfin Hot Blast Heating Surface Extra heavy duty, fin-and-oval tube, allsteel, welded con struction. A hot dip metallic coating over all, including headers, affords perfect bond ing and conductivity. Suitable for continu ous heating service on steam pressures up to 150 lb. Bulletin 492. Type GI Industrial and Heat Fans For dust and gas re moval, conveying of materials ana hand ling hot gases. Hous ings, drives, and dis charge arrangements to meet any require ment. Wheel diam eters from 10 in. to 66 in. Capacities from 450 cfih to 60,500 cfm. Details and engineering data in Bulletin 482. General Purpose Fans Portable, self-con tained units for Class I industrial and ventilating ap plications. Rec ommended for ease of installation, low maintenance and space saving fea tures. Made in three types and eight basic sizes. Capacities 400 cfm to 18,000 cfm. Bulletin 491. 1232 Air System Equipment and blowers PROPELLAIRDiv. ROBBINS & MYERS, INC. 1947 Clark Boulevard SPRINGFIELD, OHIO VENTILATING SPECIALISTS IN ALL PRINCIPAL CITIES For Ducts, Walls, Win dows, Hoods, Roof Venti lators PROPELLAIR DIRECTCONNECTED FANS For Heat. Moisture. Fumes, Dust, and Gases For use wherever motors may operate within the air stream, from free air to medium and relatively high resistance. A compact, durable design with fan having two to six blades. Sizes: 12 in. to 60 in. Capacities: 800-85,000 cfm. Type "CD." For Heat, Acids, Alka lies--Fumes, Gases. Dust BELT-DRIVEN PROPELLAIR TUBE-AXIAL TYPE A complete fan unit in short duct section ready for installation in lines from 20 in. to 48 in. diameter. Type "CS" may be used for severe acid or alkaline condi tions, explosive fumes and gases. Type "CSV," for excessive temperatures, cir culates outside air through belt and fan shaft tubes to keep drive and bearings cool. Capacities: 4100 to 43,000 cfm. For Roof Ventilation PROPELLAIR SKY BLAST Dependable and economical power roof ventilators. Butterfly dampers open wide the in stant fan is started, close auto matically as fan coasts to a stop, offer virtually zero resistance as heat, fumes, moisture, dust shoot high into air. Rain is prevented from entering by fan when operating. Drainage gutter prevents leakage when dampers are closed. Sizes: 20 in. to 60 in. Capacities: 3700 to 77,000 cfm. PROPELLAIR EXTENDED-SHAFT FANS This design locates motor outside air stream when fan is installed in duct at right angle turn, elbow, "Y," or offset. Simple installation usually can be supr ported by duct without auxiliary brac ing. Drive shaft is enclosed and sealed within steel tube. Sizes: 12 in. to 60 in. Capacities: 2000 to 68,000 cfm. Type "CE." PROPELLAIR VANEAXIAL FANS A compact, highly efficient pressure fan using standard steel drum sections in corporating stand ard NEMA frame motors in direct drive models. Also available in belt-driven ratings with motor outside the air stream. Cast aluminum airfoil propeller and guide vanes for maximum efficiency and durability. Available in 20 in., 24 in. and 30 in. diam eters, ranging from 4,000 to 15,000 cfm. AIRFOIL-SECTION Blades Airfoil Principle Entrance Ring Propellair fans have airfoilsection blades with varia tions of pitch, curvature, and thickness to compensate for different lineal speeds of points at various radii. Air movement is uniform over whole fan area. The Propel lair curved entrance ring eliminates eddy currents; helps efficient Propellair blades deliver hignest pressure and volume. 1233 v %. i i