Duravent 0303PI B-vent Round Rigid Pipe 3x36 Inches

Product Description

The DURAVENT 0303PI is a double-wall, round rigid B-vent pipe section designed for Category I gas appliance venting systems. At 3 inches in diameter and 36 inches in length, this pipe section maintains flue gas temperature through its double-wall construction, helping meet clearance-to-combustibles requirements along the vent run. It connects using a twist-lock joint system for secure, repeatable assembly. Licensed HVAC technicians and plumbers install this type of pipe when routing exhaust from natural gas or propane Category I appliances such as furnaces, boilers, and water heaters through interior or attic chase runs.

This pipe section is suited for residential and light commercial venting applications where a Category I, fan-assisted or natural-draft appliance requires a listed Type B gas vent. The 36-inch rigid section covers longer straight runs between fittings, reducing the number of joints in a vent assembly. It is part of the DVP double-wall vent pipe system and is intended for use with matching DVP series fittings, elbows, and terminations from the same product line.

Key Features

• Double-wall construction maintains flue gas temperature and satisfies clearance-to-combustibles requirements
• 3-inch diameter accommodates common residential Category I appliance venting requirements
• 36-inch rigid length reduces joint count on longer straight vent runs
• Twist-lock connection system provides secure, tool-free assembly at each joint
• Round rigid pipe format for use in interior chases, attic runs, and vertical vent stacks

Compatibility

Designed as an OEM-style replacement and standard component for Type B gas vent systems serving Category I natural-draft and fan-assisted gas appliances in residential and light commercial installations.

Installation Notes

Installation must be performed by a licensed HVAC technician or plumber in accordance with the appliance manufacturer instructions, NFPA 54 (National Fuel Gas Code), and local mechanical codes. Shut off gas supply and allow the appliance to cool completely before servicing or extending an existing vent system. Support each pipe section per code-required spacing and verify all twist-lock joints are fully engaged before restoring the appliance to service. Do not mix DVP components with fittings from other vent pipe systems or manufacturers.

Technical Specifications

• Pipe Diameter: 3 inches
• Pipe Length: 36 inches
• Construction: Double Wall
• Pipe Shape: Round
• Pipe Type: Rigid
• Vent Category: Category I (Type B Gas Vent)
• Connection Type: Twist-Lock

Standard Information

• Brand: DURAVENT
• Manufacturer Part Number: 0303PI