Lukjan rx77040604 Adjustable Flue Wye 6x4x4 Inch

Product Description

The LUKJAN rx77040604 is an adjustable flue wye fitting designed for B-vent and single-wall flue pipe systems. It provides a three-way branch connection with a 6-inch main trunk and two 4-inch branch outlets, allowing installers to split or combine flue gas flow within a venting assembly. The adjustable design accommodates angle variation at the branch, making it easier to align with existing vent runs in tight chases or mechanical rooms. HVAC technicians and plumbers use this fitting when routing exhaust from gas-fired appliances through shared or branched venting configurations.

This wye fitting is suited for residential and light commercial venting applications involving natural gas or propane appliances such as furnaces, water heaters, and boilers. It is installed within the flue system between the appliance collar and the terminal cap, typically in vertical or near-vertical vent runs where a branch connection is required. The adjustable feature reduces the need for additional offset fittings when duct runs are not perfectly plumb.

Key Features

• Adjustable branch angle accommodates varying duct alignment without additional offset fittings
• 6-inch main trunk with dual 4-inch branch outlets for branched flue configurations
• Designed for single-wall flue and B-vent venting assemblies on gas-fired appliances
• Three-way wye geometry supports both splitting and combining of flue gas flow
• Fits within the Tees and Wyes product family for standard flue system layouts

Compatibility

Designed as an OEM-style replacement or new-installation component for 6-inch by 4-inch by 4-inch single-wall flue and B-vent venting systems on gas-fired residential and light commercial appliances.

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 venting instructions. Shut off the gas supply and allow the appliance to cool completely before disassembling any portion of the flue system. Secure all flue joints with the appropriate sheet metal screws or listed fasteners and verify that flue gases are exhausting correctly after reassembly. Do not use this fitting in positive-pressure or Category III and IV venting systems unless explicitly rated for that application.

Technical Specifications

• Main Trunk Diameter: 6 inches
• Branch Outlet Diameter: 4 inches
• Number of Branch Outlets: 2
• Fitting Type: Adjustable Wye
• Application: Flue Venting

Standard Information

• Brand: LUKJAN
• Manufacturer Part Number: rx77040604