Document Ndg5RjM0yRYBm5w9J57gZYew

Air System Equipment Fans and Blowers The Company W. Market Street Warren, Ohio Representatives in Principal Cities Industrial and Commercial Ventilating Equipment .V/ VjjjpV hi ?v5 m. BACKWARD CURVE BLOWERS--In sizes from 12j^ in. to 49 in.; self-limiting hp characteristics; NAFM standards; dynamically balanced wheel; heavy castiron hub; nothing in air stream; quiet entry, passage and exit; job-matched motor; convertible discharge; belt drive or direct drive. UTILITY BLOWERS--Belt or. direct drive with clockwise or counterclockwise rotation;)^ through 73^ hp; motors in all current characteristics; convertible dis charge; arc-welded housing; sleeve or ball-bearing construction; weatherproof drive covers optional. iSs.r ??v ft ffiS? ARRANGEMENT 3-12 in. through 48 in. wheel; clockwise or counterclockwise rotation; convertible discharge; single or double width; motors and drives avail able; vibration bases optional; ball or sleeve bearings furnished. RADIAL BLADE BLOWERS--M to 2 hp; slow and high-speed units; self-cleaning wheel; ball or sleeve bearing motors; dis charge as specified; base and housing of heavy-gauge steel. C POWER ROOF VENTILATORS--Direct or belt drive; 12 in. to 48 in.; 600 to 25,000 cfm; complete with disconnect switch; totally enclosed motor; automatic shut ters; inside insulation; 16 gauge steel housing; baked enamel finish. INDUSTRIAL EXHAUST FANS--Verti cal or horizontal mounting; totally en closed motors; adjustable motor base; continuous duty; ball-bearing construc tion; cfm rating from 470 to 29,350; mount with 4 or 6 lag screws. 1400 Air System Equipment Fans and Blowers PROPElIAJRDiv ROBBINS & MYERS, INC. 1947 Clark Boulevard 5 SPRINGFIELD, OHIO HEAVY-DUTY INDUSTRIAL VENTILATING EQUIPMENT Offices in P kinOpal Cities For Ducts, Walls,^Win dows, Hoods, Roof Venti lators Propellalr Direct- Connected Fans 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 :J ,020 to 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 60 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: 5,075 to 78,000 cfm. For Heat, Moisture, Fumes, Dust, and Gases 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 sup ported by duct without auxiliary brac ing. Drive shaft is enclosed and sealed within steel tube. Sizes: 12 in. to 60 in. Capacities: 1,020 to 78,800 cfm. Type "CE." Power Roof Ventilator Propellair Sky-Blast Dependable and economical power roof ventilators. Butterfly dampers open wide the instant fan is started, close automatically 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 shed pre vents leakage when dampers are closed. Sizes: 16 in. to 60 in. Capacities: 2,800 to 78,000 cfm. Propellair Vaneaxial Airfoil Principle _ Fans Entrance Ring A compact, highly efficient pressure fan using standard steel drum sections incorporating standard NEMA frame motors in direct drive models. Also available in belt-driven ratings with motor outside the air stream. Cast alu minum airfoil propeller and guide vanes for naximum efficiency and durability. Available in 20, 24, 30, 36, 48, and 60 in. diameters in belt and direct driven models. Capacities from 3410 to 85,000 cfm. Airfoil-Section Blades y Propellair fans have airfoil-section blades with variations of pitch, curva ture, and thickness to compensate for different lineal speeds of points at vari ous radii. Air movement is uniform over whole fan area. The Propellair curved entrance ring eliminates eddy currents; helps efficient Propellair blades deliver highest pressure and volume. 1401