Schaefer Brush 43228 Flue Brush 3 in Dia 7.5 in Oal

Product Description

The SCHAEFER BRUSH 43228 is a double stem, single spiral flue brush designed for cleaning flue passages, heat exchanger tubes, and combustion venting components in residential and light commercial heating systems. The brush features a 3-inch diameter tempered steel wire spiral head and a brush length of 4.5 inches, with a total overall length of 7.5 inches. The 1/4-inch NPSM male connection allows attachment to standard extension rods, making it suitable for reaching into flue passages of varying depths. Tempered steel wire construction provides durability for repeated service use in moderate debris and soot conditions.

This flue brush is used by HVAC technicians and chimney service professionals during routine maintenance and annual tune-ups of gas, oil, or solid-fuel heating appliances. The 3-inch diameter makes it appropriate for small-diameter flue tubes and heat exchanger passages commonly found in residential boilers, water heaters, and furnaces. The NPSM male threaded connection is compatible with standard brush extension rod systems, enabling technicians to clean passages without disassembly where rod access is available.

Key Features

• 3-inch diameter tempered steel wire spiral brush for flue and heat exchanger tube cleaning
• 4.5-inch brush length provides effective scrubbing coverage in straight flue passages
• 7.5-inch overall length accommodates direct use or extension rod attachment
• 1/4-inch NPSM male connection for use with standard extension rod systems
• Double stem construction adds rigidity and supports consistent spiral contact with tube walls
• Tempered steel wire material resists deformation during repeated service use

Compatibility

Designed as an OEM-style replacement and standard service brush for small-diameter flue tubes and heat exchanger passages requiring a 3-inch brush diameter with a 1/4-inch NPSM male threaded connection.

Installation Notes

Installation and use of this flue brush should be performed by a qualified HVAC technician or licensed chimney sweep. Power down or shut off the appliance and allow all components to cool fully before beginning any flue or heat exchanger cleaning procedure. Insert the brush manually or attach to compatible extension rods before feeding into the flue passage; do not force the brush through passages that are significantly smaller than the brush diameter. Follow all applicable local codes and manufacturer service procedures when servicing venting and combustion components.