14.7 hp regenerative blower for high-duty vacuum and pressure
The Fuji Electric VFZ901A-5W is a regenerative ring compressor sized for industrial air-moving duty at 14.7 hp output, running on three-phase 575V AC at 60 Hz and drawing 15.2 A — a 575V machine, so it lands on the higher North American industrial distribution rails rather than the 208/230/460V shop stock. On the air side it pushes up to 574 cfm and pulls a maximum vacuum of 110 in wc, with a maximum operating pressure of 138.5 in wc — that envelope is what dictates the application, typically high-flow vacuum hold-down, pneumatic conveying, aeration, or drying where a regenerative blower sits between a centrifugal fan and a positive-displacement pump.
TEFC NEMA Premium IE3 motor in an aluminum housing
The drive end is a totally enclosed fan-cooled motor at NEMA Premium IE3 efficiency, meaning the unit meets the U.S. Department of Energy premium-efficiency threshold for polyphase motors — relevant for facilities reporting under energy-intensity programs or chasing lower operating cost on a continuously running blower. Thermal protection is pilot-duty, which is the auxiliary-contact style typically wired back to a starter or VFD fault input rather than carrying the motor current directly. Maximum ambient is rated at 104 °F and the air-temperature rise ceiling is 180 °F, so a hot mechanical-room install needs to keep inlet air below the ambient ceiling or the motor will trip before the published flow curve holds.
3-inch NPT female ports, 259 lb footprint
Both inlet and outlet are 3-inch NPT female threads, so it drops into standard iron or steel piping without specialty fittings — a small-shop install can plumb it with off-the-shelf black iron and PTFE tape rather than ordering adapter flanges.
Compliance and sourcing posture
The blower carries CE, CSA, UR, and RoHS compliance markings, which covers the North American and European jurisdictions where this class of industrial air-mover is typically specified — the UR mark plus CSA acceptance supports installation under U.S. and Canadian electrical codes.