Document b1Ln9yzXQXydQ37nd810EowO

Air System Equipment R*.f vcnuutes Allen Cooler & Ventilator Inc. Rochester, Michigan Representatives in Principal Cities See Sweets Catalog for Further Details Write to Factory for Catalog Air System Equipment Air Vents and Roof Ventilators AjjXgglw; C. L. Ammerman Co. 110 North Second St., Minneapolis 1, Minn. EXHAUSTERS Write for special engineers bulletin Exhausters Powered or Gravity Underfloor and Overhead Systems See Sweet's file for further details BACKWARD CURVE DIRECT CONNECTED Grey enamel finish. Motor mount sup port is heavy angle iron, and electric welded. AIRMPELER TURBO EXHAUSTER HIGH EFFICIENCY ROOF FAN Allen Type "H" Roof Fan is designed as a general purpose, power driven exhaust unit for either new construction or re placement service. It features rugged construction, low power consumption, ease of installation, large air removal capacity. Available in a wide range of capacities (750 to 45,000 cfm) and in three series: Standard with belt drive; Direct Drive, and Remote Drive, for use where air is laden with heat, fumes, vapor or dust. VERTICAL DISCHARGE FAN Allen Type "VD" Roof Fan is designed for use where extremely high discharge velocity prevents the tendency of fumes to short circuit back through building openings. Fabricated of prime zinccoated iron sheet, welded construction throughout. Automatic wing dampers open with air blast, close weathertight when not operating. Available with Direct Drive, with motor readily acces sible, or Remote Drive, with motor in outside housing and enclosed V-belt drive. Hi-Static Exhauster for Wall or Roof Mounting. Non overloading backward curve centrifugal fan wheel designed for optimum performance at specific diam eter. Lowest possible velocities reduce noise level to an absolute minimum-no sharp corners to produce turbulence. Motor directly connected to dynami cally balanced wheel eliminates costly maintenance of belts, pulley and drive shaft bearings. BELTED POWER ROOF EXHAUSTER Similar in Appearance to All Airxpeler Units. Sturdily built blower wheel has die-formed blades of 16 gage mild steel mounted on thrust ball bearing for trouble-free rotating speed. Vertical blades give a greater surface to the propelling wind than an ordinary spiralformed blade. DISAPPEARING EXHAUST SYSTEMS STAXAUSTER FAN Allen Staxauster is a simple, compact, sturdy unit that can be used to convert all types of roof ventilators into power ful exhaust or air supply units. It is available in many sizes with either Direct Drive or Remote Drive for handling corrosives and/or high temperature air. TURBINE VENTILATOR Allen Type "C" Turbine Ventilator is wind driven and economically removes heated air, fumes and dust. It is made of heavy-gage coated iron or of special non-ferrous metals, and is easy to install and maintain. Many thousands of Type "C" Turbines are in use in industry. 1396 s^tion of 16 wheel sizes; 204 speed combinations with *?,low " 2000 Fpin. Unit is cept.onally low in height. Standard lon consists of welded struct heavy 10 gage steel t rm band and motor cover is 18 g Under the Floor and Overhead exhaust systems for cars and trucks. Will ac commodate flexible metal hose up to 6 in. in diameter. Write for bulletin No. 610. 1397