Schaefer Brush 43206 Flue Brush 0.75 in Dia 7.5 in Oal

Product Description

The SCHAEFER BRUSH 43206 is a double stem, single spiral flue brush designed for cleaning flue passages, heat exchanger tubes, and boiler flues in residential and light commercial heating equipment. The brush head is constructed from tempered steel wire wound in a single spiral pattern over a double stem frame, delivering firm, even scrubbing contact against tube walls to dislodge scale, soot, and debris. At 0.75 inches in diameter with a brush length of 4.5 inches and an overall length of 7.5 inches, this tool is sized for standard small-diameter flue passages. The 0.25-inch male NPSM connection allows it to be threaded onto compatible extension rods for deeper reach. HVAC technicians and boiler service pros use this brush during routine maintenance and combustion efficiency service.

This flue brush is suited for cleaning small-diameter flue tubes, boiler sections, heat exchanger passages, and related combustion system components in residential and light commercial HVAC systems. It is a hand tool application, typically used during annual preventive maintenance, combustion analysis service, or post-inspection cleaning procedures. The compact 0.75-inch diameter makes it appropriate for tighter tube configurations found in older cast-iron sectional boilers and tubular heat exchangers.

Key Features

• Tempered steel wire construction provides durable scrubbing action against scale and soot deposits
• Single spiral wound pattern ensures consistent contact along the full brush length of 4.5 inches
• Double stem frame adds rigidity and reduces flex during use in deeper passages
• 0.25-inch male NPSM threaded connection for use with standard extension rod sets
• Compact 0.75-inch diameter fits small flue tubes and heat exchanger passages
• Lightweight at 0.28 pounds for easy single-hand operation

Compatibility

Designed as an OEM-style replacement and service brush for residential and light commercial heating systems with flue tube or heat exchanger passage diameters of approximately 0.75 inches, and compatible with extension rod sets using a 0.25-inch NPSM male connection.

Installation Notes

This brush is a hand-maintenance tool used by HVAC technicians and boiler service professionals. Always shut down the burner and allow the heating system to cool completely before inserting any flue brush into the flue passages or heat exchanger. Thread the brush onto compatible extension rods hand-tight before use and inspect the wire bristles for damage or loose strands before each cleaning session. Dispose of dislodged debris in accordance with local waste handling requirements for combustion byproducts.