JM Evase Vaneaxial Fans by American Fan Company can save energy over the installed life of the system by recovering the kinetic energy contained in the high velocity air stream's mass. These fans work just as hard as the normal fans you are accustomed to, and then go on to recover energy by converting the velocity pressure in the system into static pressure by means of a built-in discharge cone.
Evase Vaneaxial Fans range in size from 500 mm to 1400 mm diameter.
JM Airfoil Impellers are high-pressure die cast of aluminum and consist of blades, hub and clamp plate. The impeller is manually adjustable through the full range of pitch angles.
All impeller components are X-rayed using real time radiography and examined to ASTM E-155, prior to machining, to assure casting integrity and quality. Impellers are precision balanced as a fan assembly to minimize vibration levels and assure smooth operation.
Fan casings are made of heavy gauge steel with spun flanges and continuously welded seams. The casing is manufactured to a stringent tolerance for roundness which assures proper blade tip clearance for optimal performance.
More Info - See ECA 10-07 Bulletin