The 4-73 Centrifugal Fan is designed to handle large volumes of relatively clean air at low to moderate pressures in applications such as:
Impellers are made of steel with flat single-thickness blades, solidly welded to the rim and backplate. The inlet-side rim is properly shaped to match the inlet cone. All impellers are statically and dynamically balanced to grade BV3 per AMCA 204 for smooth operation. Final balancing is done after the entire rotating assembly is completed.
All 4-73 fan housings are continuously welded and reinforced with rigid bracing to ensure structural integrity. Support angles are intermittently welded and caulked between welds to prevent bleed-through corrosion.
12.25 to 98.25 inches (315 mm to 2,500 mm)
Airflow up to 277,500 CFM (471,500 m³/hour)
Static pressure up to 20 inches w.g. (4,970 Pa)
