Z-flex 2CNNBFC03 B-vent Connector 3 Inches

Product Description

The Z-FLEX 2CNNBFC03 is a 3-inch B-vent connector designed to adapt a Z-Flex flexible gas liner to a Type B gas vent system. This fitting bridges the transition between flexible stainless steel or aluminum gas liner and double-wall Type B vent pipe, maintaining a continuous and code-compliant flue path. It is installed by licensed HVAC technicians or plumbers working on natural gas or propane appliance venting systems where a flexible liner connects to a rigid B-vent run.

This connector is suited for residential and light commercial venting applications involving gas-fired appliances such as furnaces, boilers, and water heaters. It is used when a flexible gas liner terminates at or transitions into a Type B vent section, a common scenario during liner retrofits of masonry chimneys or when extending an existing B-vent system with a flexible run.

Key Features

• 3-inch diameter fits standard 3-inch B-vent and matching flexible gas liner sizes
• Designed specifically to adapt Z-Flex gas liner to Type B gas vent pipe
• Maintains a sealed flue transition for safe combustion gas routing
• Compact connector form factor simplifies tight-clearance installations

Compatibility

Designed to connect Z-Flex flexible gas liner to Type B gas vent systems. Compatible with 3-inch Z-Flex gas liner and standard 3-inch Type B gas vent fittings.

Installation Notes

Installation should be performed by a licensed HVAC technician or plumber in accordance with the International Fuel Gas Code (IFGC) and the appliance manufacturer's venting requirements. Shut off the gas supply and allow the appliance and vent system to cool completely before beginning any venting work. Ensure all joints are properly secured and the completed venting assembly is inspected for leaks before returning the appliance to service. Follow local jurisdiction requirements for vent clearances and termination height.

Technical Specifications

• Diameter: 3 inches
• Vent Type: Type B Gas Vent
• Application: Gas liner to B-vent adapter

Standard Information

• Brand: Z-FLEX
• Manufacturer Part Number: 2CNNBFC03