Duravent 03VT B-vent Cap 3 Inches High Wind Top

Product Description

The DURAVENT 03VT is a B-vent termination cap engineered for high-wind venting conditions. It installs at the top of a Type B gas vent system and is designed to reduce downdrafts that can disrupt appliance draft and cause incomplete combustion. The cap fits 3-inch diameter B-vent pipe and uses a high-wind profile to maintain consistent negative pressure across the vent column. Licensed HVAC technicians and gas-appliance installers typically handle this termination hardware as part of a complete venting assembly on Category I gas appliances such as furnaces and water heaters.

This cap is suited for residential and light-commercial Category I gas appliance venting applications where outdoor wind exposure is a concern. It mounts at the vent termination point above the roofline or through a wall termination, protecting the vent opening from wind-induced backdrafting. It is appropriate for use in new construction venting runs and as a replacement termination cap on existing B-vent systems where the original cap has failed or been damaged.

Key Features

• High-wind cap profile resists downdrafts and maintains proper appliance draft
• Designed for 3-inch diameter Type B gas vent pipe
• Serves as a vent termination point for Category I gas appliance systems
• Replacement-ready design suits both new installations and service calls
• Positioned at the top of the vent system to protect the vent opening from weather intrusion

Compatibility

Designed as an OEM-style replacement termination cap for 3-inch Type B gas vent systems used with Category I gas appliances.

Installation Notes

Installation should be performed by a licensed HVAC technician or qualified gas-appliance installer in accordance with NFPA 54 and local gas codes. Shut off the gas supply and allow the appliance and vent system to cool completely before removing or replacing any vent termination components. Ensure the cap is secured per the vent manufacturer specifications and that vent clearances from combustibles and the roof surface meet code requirements. Do not operate the appliance until the termination cap is fully seated and the vent system has been inspected for proper assembly.

Technical Specifications

• Pipe Diameter: 3 inches
• Vent Type: Type B Gas Vent (B-Vent)
• Application: Category I Gas Appliance Venting
• Cap Style: High Wind Top

Standard Information

• Brand: DURAVENT
• Manufacturer Part Number: 03VT