Duravent 0618PI B-vent Round Rigid Pipe 6x18 in Double Wall

Product Description

The DURAVENT 0618PI is a double wall, air-insulated B-vent round rigid pipe section designed for Category I natural gas and propane appliance venting systems. Measuring 6 inches in diameter and 18 inches in length, it uses air space between the inner and outer walls to help maintain flue gas temperature, which is critical for proper draft performance. The twist-lock connection system allows for fast, secure field assembly without additional fasteners. Licensed HVAC technicians and gas appliance installers working on residential and light commercial venting runs will find this a standard pipe section for vertical or offset B-vent configurations.

This pipe section is suited for residential and light commercial applications where Category I gas appliances — such as furnaces, boilers, and water heaters — require a listed B-vent exhaust system. The 6-inch diameter accommodates higher-capacity appliances, and the 18-inch length fits standard stud-bay and straight-run installations. It is intended for use as part of a complete DVP series B-vent system, connecting with compatible fittings, elbows, and terminations in the same product family.

Key Features

• Double wall, air-insulated construction maintains flue gas temperature for reliable draft
• 6-inch diameter x 18-inch length suits higher-capacity Category I gas appliance venting
• Twist-lock connection system allows fast, secure assembly in the field
• Round rigid pipe design supports vertical and angled B-vent run configurations
• Compatible with DVP series B-vent fittings and accessories for complete system builds

Compatibility

Designed as an OEM-style B-vent pipe section for use in Category I gas appliance venting systems requiring a 6-inch diameter double wall air-insulated vent pipe.

Installation Notes

Installation must be performed by a licensed HVAC technician or qualified gas appliance installer in accordance with NFPA 54 (National Fuel Gas Code) and the appliance manufacturer's venting instructions. Shut off the gas supply and allow the appliance to cool completely before servicing or extending any vent run. Maintain all required clearances to combustibles as specified by the listing and local codes. Do not mix B-vent components from different manufacturers or product series within the same vent system without verifying listing compatibility.

Technical Specifications

• Diameter: 6 inches
• Length: 18 inches
• Wall Construction: Double wall, air-insulated
• Pipe Shape: Round
• Vent Type: B-Vent (Category I gas appliances)
• Connection Type: Twist-lock

Standard Information

• Brand: DURAVENT
• Manufacturer Part Number: 0618PI