Duravent 0718PI B-vent Round Rigid Pipe 7x18 in Double Wall

Product Description

The DURAVENT 0718PI is a double wall air-insulated B-vent round rigid pipe section measuring 7 inches in diameter and 18 inches in length. Designed for Category I gas appliance venting systems, this pipe section maintains flue gas temperature through its air-insulated double wall construction, helping meet clearance-to-combustibles requirements in residential and light commercial installations. The twist-lock connection system allows for secure field assembly without additional fasteners. Licensed gas technicians and HVAC installers use this component to build or extend vertical venting runs on natural gas and propane appliances.

This pipe section is suited for residential and light commercial gas venting applications where Category I, fan-assisted or natural-draft appliances require a listed B-vent system. Typical installations include gas furnaces, water heaters, boilers, and space heaters vented through interior chases or exposed vertical runs. The 7-inch diameter accommodates higher-capacity appliance venting requirements, and the 18-inch length provides a standard section for building or extending an existing DVP B-vent system.

Key Features

• Double wall air-insulated construction maintains flue gas temperature throughout the vent run
• 7-inch inner diameter suits higher-capacity Category I gas appliances
• 18-inch rigid section for standard vertical or offset venting runs
• Twist-lock connection system enables secure, tool-free field assembly
• Round rigid pipe design compatible with DVP B-vent system components

Compatibility

Designed as an OEM-style replacement and extension component for DVP series B-vent systems used with Category I natural gas and propane appliances.

Installation Notes

Installation must be performed by a licensed HVAC technician or gas fitter in accordance with the National Fuel Gas Code (NFPA 54) and applicable local codes. Shut off the gas supply and allow the appliance and existing vent to cool completely before beginning work. Ensure all twist-lock connections are fully engaged and that the assembled vent system maintains required clearances to combustible materials throughout its run. Do not mix B-vent components from different manufacturers or vent categories within the same system.

Technical Specifications

• Pipe Diameter: 7 inches
• Pipe Length: 18 inches
• Construction: Double wall air-insulated
• Vent Category: Category I (B-Vent)
• Connection Type: Twist-lock
• Pipe Shape: Round rigid

Standard Information

• Brand: DURAVENT
• Manufacturer Part Number: 0718PI