Duravent 0503PI B-vent Round Rigid Pipe 5x36 Inch

Product Description

The DURAVENT 0503PI is a double-wall, air-insulated B-vent round rigid pipe section designed for Category I natural draft gas appliance venting systems. Measuring 5 inches in diameter and 36 inches in length, it uses double-wall construction to maintain flue gas temperature throughout the vent run, which supports proper draft and reduces the risk of condensation inside the liner. The air space between the inner and outer walls acts as insulation without adding excessive bulk. This pipe section is installed by licensed HVAC technicians and gas appliance installers as part of a complete B-vent system.

This pipe section is suited for residential and light commercial gas venting applications where Category I appliances are in use, including natural draft furnaces, water heaters, and boilers vented through interior or exterior B-vent assemblies. The 5-inch diameter accommodates mid-range appliance vent collar sizes. The 36-inch rigid section is used in straight runs between fittings, offsets, or at vertical risers within a venting assembly.

Key Features

• Double-wall, air-insulated construction maintains flue gas temperature for reliable natural draft
• 5-inch diameter fits mid-range Category I appliance vent outlets
• 36-inch rigid length suitable for straight vent runs between fittings
• Twist-lock connection design allows secure, tool-free assembly with compatible B-vent components
• Round rigid pipe profile provides structural stability within the vent stack

Compatibility

Designed as an OEM-style replacement and new-installation component for Category I natural draft gas appliance B-vent systems requiring 5-inch diameter round rigid pipe sections.

Installation Notes

Installation must be performed by a qualified HVAC technician or licensed gas appliance installer in accordance with the National Fuel Gas Code (NFGC) and local authority having jurisdiction requirements. Shut off gas supply and allow the appliance and existing vent components to cool completely before beginning service or replacement work. Maintain required clearances to combustibles as specified by the vent system manufacturer and applicable codes. Do not mix B-vent components from incompatible product lines or manufacturers without verifying cross-compatibility.

Technical Specifications

• Pipe Diameter: 5 inches
• Pipe Length: 36 inches
• Wall Construction: Double wall, air-insulated
• Vent Category: Category I (B-Vent)
• Connection Type: Twist-lock
• Pipe Profile: Round rigid

Standard Information

• Brand: DURAVENT
• Manufacturer Part Number: 0503PI