Duravent 0712ADJ B-vent Adjustable Vent Pipe 7 Inch

Product Description

The DURAVENT 0712ADJ is a round, adjustable B-vent pipe section designed for natural-draft gas appliance venting systems. It provides a telescoping length range of 3.5 to 10.5 inches at a 7-inch diameter, making it a practical solution for closing gaps between fixed-length vent sections during installation or retrofit work. Licensed HVAC technicians and plumbers install this type of fitting when a standard fixed-length pipe section does not align precisely with existing vent runs or appliance collar connections. The adjustable design eliminates field cutting and reduces the chance of improper fitment in tight mechanical chases.

This pipe section is suited for residential and light commercial gas appliance venting applications where Type B double-wall vent pipe is required. Typical use cases include furnaces, boilers, water heaters, and other natural-draft gas appliances that exhaust through a B-vent system. The adjustable length is particularly useful when connecting an appliance collar to a ceiling support or when bridging minor dimensional mismatches in a multi-section vertical or horizontal vent assembly.

Key Features

• Adjustable length from 3.5 to 10.5 inches to accommodate variable spacing in vent runs
• 7-inch diameter matches standard B-vent system sizing for natural-draft gas appliances
• Round pipe profile for consistent airflow and straightforward connection to other B-vent fittings
• Telescoping construction allows on-the-spot length adjustment without field cutting
• Designed for use in Type B double-wall gas vent systems per applicable venting codes

Compatibility

Designed as an OEM-style adjustable section for use within 7-inch Type B double-wall gas vent systems on natural-draft residential and light commercial gas appliances.

Installation Notes

Installation should be performed by a licensed HVAC technician or plumber in accordance with the International Fuel Gas Code (IFGC) and the appliance manufacturer's venting instructions. Shut off and lock out the gas supply to the appliance before disturbing any vent section. Ensure all vent joints are properly secured and that the assembled system maintains the required clearances to combustibles as specified by the vent system manufacturer and local code. Do not use this fitting in applications requiring Type L or Category III or IV positive-pressure vent systems.

Technical Specifications

• Diameter: 7 inches
• Adjustable Length Range: 3.5 to 10.5 inches
• Vent Type: Type B Double-Wall Gas Vent
• Profile: Round

Standard Information

• Brand: DURAVENT
• Manufacturer Part Number: 0712ADJ