Description

The Mosmatic 81.506 is the adjustable version of the ultra-compact 3-inch duct cleaner. It is one of the smallest professional rotating cleaners on the market that offers a variable spray angle. While the fixed version is locked for vertical impact, this Adjustable (ADJ) model allows you to “tune” the nozzles for specific cleaning paths or to provide self-propulsion in horizontal pipes.

Key Specifications

• Part Number: 81.506

• Diameter: 3 inches (75mm)

• Maximum Pressure: 4,000 PSI (4,500 PSI Max)

• Maximum Temperature: 250°F

• Inlet: 3/8″ NPTF (Female)

• Outlets: 2 x 1/8″ NPTF (Requires two nozzles, sold separately)

• Material: High-grade Stainless Steel

Core Features

• Adjustable Spray Arms: The arms can be rotated to change the spray direction.

  • 90° Alignment: Ideal for scrubbing the walls of small vertical pipes and vents.

  • Angled/Offset: Creates a “jetting” effect. This is essential if you need the tool to pull itself into a horizontal pipe or navigate around slight curves in a duct.

• Miniature Profile: At only 3″ wide, this tool is designed for the narrowest applications, such as residential dryer vents, small restaurant “tail-pipes,” and specialized industrial conduits.

• Industrial Swivel: Despite its size, it uses the standard Mosmatic high-RPM swivel with carbide seals. It is designed for high-heat (steam) and high-pressure use without leaking or seizing.

• Protective Cage: Includes a stainless steel guard that prevents the rotating nozzles from striking the interior of the pipe, ensuring the tool rotates freely even in cramped spaces.

Common Applications

• Small Pipe Descaling: Removing mineral buildup or debris from 3″ to 5″ industrial pipes.

• Dryer Vent Cleaning: Professional-grade removal of lint and blockages in residential or commercial laundry vents.

• Horizontal Exhausts: The adjustable arms allow the unit to travel through horizontal runs that standard “drop” cleaners can’t handle.

• Small Vessel Cleaning: Sanitizing the inside of small tanks, drums, or chemical containers.