Lukjan RX77040503 Adjustable Flue Wye 5x4x3

Product Description

The LUKJAN RX77040503 is an adjustable flue wye fitting designed for venting system fabrication and installation. This fitting connects three flue runs at a junction point, allowing vent branches to be combined or split within a venting assembly. The adjustable design accommodates angular variation at the branch connection, giving installers flexibility when working with non-standard run alignments. With nominal dimensions of 5 inches by 4 inches by 3 inches, it suits venting configurations where a main flue run transitions or branches at a wye junction. HVAC technicians and sheet metal installers work with this type of fitting on gas appliance vent systems and related draft applications.

This adjustable flue wye is suited for residential and light commercial venting installations where multiple appliance vents must be combined into a common flue run, or where a single flue must branch to serve separate venting paths. The 5-inch by 4-inch by 3-inch sizing makes it appropriate for mid-range residential furnaces, water heaters, and similar gas-fired appliances vented through round flue pipe assemblies. Installers use it when routing vent pipe through tight or angled spaces where a fixed-angle wye would not align properly.

Key Features

• Adjustable branch angle provides installation flexibility in non-standard vent run alignments
• Three-port wye configuration joins or splits flue runs at a single junction
• Nominal sizing of 5 inches by 4 inches by 3 inches covers a common range of residential flue diameters
• Designed for round flue pipe venting systems on gas-fired appliances

Compatibility

Designed as an OEM-style replacement and fabrication fitting for round flue pipe venting assemblies in residential and light commercial gas appliance installations.

Installation Notes

Installation should be performed by a licensed HVAC technician or qualified sheet metal installer in accordance with local mechanical codes and IFGC requirements. Shut off the appliance and allow the venting system to cool before handling or modifying any flue components. Confirm that all joints are properly secured and sealed per the appliance manufacturer and authority having jurisdiction requirements. Do not exceed the pressure or temperature rating of the connected venting system components.

Technical Specifications

• Fitting Type: Adjustable Flue Wye
• Main Diameter: 5 inches
• Branch Diameter: 4 inches
• Outlet Diameter: 3 inches

Standard Information

• Brand: LUKJAN
• Manufacturer Part Number: RX77040503