Selkirk 1051343 Type B Gas Vent Fixed Wye 5x4x3 in

Product Description

The SELKIRK 1051343 is a fixed wye fitting for Type B double-wall gas vent systems. It features an aluminum inner liner and a galvanized steel outer wall, combining in a wye configuration that allows branching transitions within a venting run. The fixed wye geometry promotes smoother flue gas flow than a standard tee, reducing turbulence at the junction point. This fitting is sized at 5 inches by 4 inches by 3 inches and is installed by licensed HVAC technicians or gas-appliance service professionals working on residential or light-commercial gas venting systems.

This fixed wye fitting is used in Type B gas vent installations serving natural gas or propane appliances such as furnaces, boilers, and water heaters. The three-port wye allows a smaller 3-inch branch to tie into a reducing main run from 5 inches down to 4 inches, making it well suited for combining vent lines or transitioning between duct sizes in a shared venting configuration. It is appropriate for residential and light-commercial applications where Type B venting is the required system type.

Key Features

• Double-wall construction with aluminum inner liner and galvanized steel outer wall
• Fixed wye shape supports smoother flue gas flow compared to a standard tee fitting
• Three-port sizing at 5 inches, 4 inches, and 3 inches accommodates reducing and branch transitions
• Designed for Type B gas vent systems serving natural gas and propane appliances
• Country of Origin: Mexico

Compatibility

Designed as an OEM-style replacement and new-installation fitting for Type B double-wall gas vent systems where a fixed wye transition is required.

Installation Notes

Installation of Type B gas vent fittings must comply with the International Fuel Gas Code and the appliance manufacturer venting requirements. A qualified HVAC technician or licensed gas-appliance installer should shut off gas supply and allow the system to cool before servicing any vent components. Joints should be secured per the manufacturer assembly method and inspected for proper seating and alignment before returning the system to service. Do not mix Type B vent components from different manufacturers within the same venting system unless the manufacturer explicitly approves intermixing.

Technical Specifications

• Vent Type: Type B Double-Wall Gas Vent
• Configuration: Fixed Wye
• Port Sizes: 5 inches x 4 inches x 3 inches
• Inner Liner Material: Aluminum
• Outer Wall Material: Galvanized Steel
• Country of Origin: Mexico

Standard Information

• Brand: SELKIRK
• Manufacturer Part Number: 1051343