Duravent 05VT B-vent Cap 5 Inches High Wind Top

Product Description

The DURAVENT 05VT is a B-vent termination cap engineered for high-wind venting applications on Category I gas appliances. It mounts at the top of a 5-inch B-vent stack and uses a high-wind top design to resist downdrafts that can disrupt draft pressure and cause combustion byproducts to back up into the appliance. Licensed HVAC technicians and gas-appliance service professionals install this cap as part of a compliant atmospheric venting system, replacing worn or damaged termination hardware to restore proper stack effect and appliance performance.

This cap is suited for residential and light-commercial Category I gas appliance installations where the vent terminal is exposed to prevailing winds, elevated rooflines, or open-exposure conditions. It fits 5-inch B-vent pipe and terminates the vent run above the roofline, maintaining the negative pressure needed for reliable natural-draft venting. It is appropriate for use on gas furnaces, water heaters, boilers, and other naturally drafting Category I appliances vented through a B-vent system.

Key Features

• High-wind top design reduces downdraft intrusion and stabilizes natural draft
• Fits 5-inch B-vent pipe for a secure, weather-tight rooftop termination
• Designed for Category I gas appliance venting systems
• Replaces damaged or missing vent termination caps to restore proper system function
• Rooftop installation position protects the open vent stack from precipitation and debris

Compatibility

Designed as an OEM-style replacement termination cap for 5-inch B-vent systems used with Category I naturally drafting gas appliances.

Installation Notes

Installation should be performed by a licensed HVAC technician or gas-appliance service professional in accordance with NFPA 54 (National Fuel Gas Code) and local authority having jurisdiction requirements. Shut off the gas supply and allow the appliance and vent system to cool completely before beginning work at the rooftop termination. Secure the cap per the manufacturer fit requirements and verify that the vent system maintains proper clearances from combustibles and adjacent structures after installation. Inspect the full vent run for corrosion, separations, or blockages before returning the appliance to service.

Technical Specifications

• Vent Pipe Diameter: 5 inches
• Vent Type: B-Vent (Type B Gas Vent)
• Application: Category I Gas Appliance Venting
• Design: High Wind Top

Standard Information

• Brand: DURAVENT
• Manufacturer Part Number: 05VT