NaceCare DP 420 8025112 Hydrowasher – 14", 780 RPM, 1000W, 800K Bristles, 64 dB

NaceCare DP 420 8025112 – 14-Inch Cylindrical Hydrowasher, 780 RPM, 800,000 Bristles

The NaceCare DP 420 (part number 8025112) is a 14-inch cylindrical Hydrowasher using counter-rotating brushes with 800,000 bristles at 780 RPM. This configuration lifts dirt from grout lines, textured surfaces, rubber flooring, and carpet fibers that flat-disc scrubbers with limited surface contact cannot agitate effectively. At 57 lbs, 64 dB(A), and 4,000 square feet per hour, the DP 420 is designed for precision cleaning in tight spaces — restrooms, kitchen areas, and multi-surface environments where one machine handles both hard floors and carpet.

DP 420 Cylindrical Brush System and Multi-Surface Capability

• 780 RPM counter-rotating cylindrical brushes: two brushes rotate toward each other simultaneously, creating a converging agitation action that lifts soil from grout lines and surface textures more effectively than a single rotating disc.
• 800,000 bristles per brush system: high bristle density ensures coverage across uneven surface textures — grout joints, rubber tiles, textured concrete — where flat pad contact is limited.
• Offset brush and drive unit: the brush assembly extends to the machine edge, enabling cleaning right up to baseboards and into corners without a separate wall edge pass.
• Multi-surface brush options (black/grey/yellow): black brushes for aggressive hard floor scrubbing, grey for general-purpose use, yellow for sensitive carpet and fiber cleaning.
• Twin conveyor recovery: dirty water is lifted to the central recovery tank as the brushes rotate, or the machine can be used for double-scrubbing passes without water recovery.
• 64 dB(A) noise level: quieter than most disc scrubbers in this cleaning width range; suitable for cleaning during occupied hours in hospitals, schools, and retail environments.

Where Cylindrical Brush Technology Outperforms Disc Scrubbers

Disc scrubbers contact the floor with a flat pad that rides over grout lines and surface texture without agitating inside them. The DP 420's cylindrical brushes reach into grout joints, crevices, and textured surfaces that disc pads ride over. In food service areas, grout joints accumulate grease and food residue that requires cylindrical brush agitation to dislodge. In carpeted areas, cylindrical brushes used with appropriate yellow brush heads provide interim carpet cleaning without the equipment change required to switch from a floor scrubber to a carpet extractor. Escalator cleaning is another application where the DP 420's cylindrical brush geometry contacts the tread ribs that flat disc machines cannot clean.

DP 420 Tank Capacity and Cord Specifications

The DP 420 carries a 2-gallon solution tank and 1-gallon recovery tank — sized appropriately for a 14" precision cleaning machine used in smaller areas rather than large open floor runs. The 40-foot power cord provides working radius from a standard outlet. Brush selection is the most important variable in DP 420 performance — using yellow carpet brushes on hard tile will under-agitate; using black aggressive brushes on sensitive carpet fibers will cause fiber damage.

Documents

Brochure / Spec Sheet

Manual