Schaefer Brush 90422 Spoke Brush 2.5 in Large End

Product Description

The SCHAEFER BRUSH 90422 is a spoke brush designed for cleaning and deburring cylindrical bores, tubes, ports, and spoke-style openings in mechanical and industrial components. With a large end diameter of 2.5 inches, it reaches and scrubs the interior surfaces of fittings, valve bodies, heat exchanger tubes, conduit ends, and similar hollow passages. Technicians in HVAC, plumbing, and general mechanical service use spoke brushes to remove scale, debris, oxidation, and residue before assembly or inspection. The 90422 weighs 0.3 pounds, making it a lightweight hand tool suited for bench work and field service alike.

Spoke brushes of this type see regular use in trade applications where internal surfaces must be cleaned before sealing, soldering, brazing, or threading. The 2.5-inch large end diameter suits mid-to-large bore fittings and pipe connections common in commercial plumbing and HVAC mechanical rooms. HVAC technicians, pipefitters, and plumbers reach for spoke brushes during maintenance, retrofit, and new installation work when bore cleanliness directly affects joint integrity or component fit.

Key Features

• Large end diameter of 2.5 inches for cleaning mid-to-large bore openings
• Lightweight at 0.3 pounds for easy one-handed use in tight spaces
• Spoke-style bristle design reaches and scrubs interior bore surfaces evenly
• Sold individually as a single-unit package

Compatibility

Designed as a general-purpose spoke brush suitable for cleaning cylindrical bores and tubular openings with an inside diameter compatible with a 2.5-inch large end brush profile.

Installation Notes

Use appropriate personal protective equipment, including gloves and eye protection, when brushing debris from bore surfaces. Ensure the fitting, valve, or pipe section is depressurized and isolated from the system before cleaning. Dispose of loosened scale or debris before assembly to avoid contaminating the system. Follow applicable codes such as IPC or IFGC when preparing joints for soldering, brazing, or mechanical connection.