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Nilfisk 3997W 440V HEPA VACUUM 4031000053

by Nilfisk
Original price $52,633.00 - Original price $52,633.00
Original price
$52,633.00 - $52,633.00
Current price $52,633.00

Nilfisk 3997W 440V HEPA VACUUM 4031000053

Over 30 horsepower and standard 46 gallon capacity make the 3997 and 3997W suitable for heaviest industrial applications, either as a portable unit, integrated with process machinery, or to power a central vacuum system.

The 3997 and 3997W three-phase, continuous duty vacuums deliver over 23 kW and the highest performance Nilfisk offers in a portable machine. The standard main filter has 71 sq ft of surface area, and there's an option to upgrade to over 94 sq ft. A standard electric filter shaker makes maintaining the machine easy. Opt for the compressed air filter purge system and step up to more than 118 sq ft of filter media and uninterrupted operation. When dusts pose a health hazard, optional downstream HEPA filter will help clear the air. All 3997 and 3997W machines include a manometer that indicates when the main filter requires cleaning and operators can de-dust the filter without being exposed to the dirt inside the machine. Stainless versions are also available.


  • Continuous duty, 23 kW two-stage side channel blower
  • 175 liter steel container with sight glass
  • Complete electrical panel
  • Phase indicator / inverter
  • Manual filter shaker
  • Manometer
  • Container with casters and handle
  • Standard 100mm inlet
  • 120mm inlet when equipped with cartridge kit


Cord length (ft): 30
Voltage at 60 Hz (V): 460
Rated power (KW): 20
Noise level at 3' 3" (1 m) (dB(A)): 78
Tank capacity (Gal / l): 46 / 175
Waterlift, max. (Inches H2O): 76
Filter area, main (ft²): 71
HEPA filter area (ft²): 312.2
Machine Inlet (Inches): 4
Dimensions, L x W x H (Inches): 78.7x35.4x84.6