Air Flow Products 86F4 Full Flow Tee 4x4x4

Product Description

The AIR FLOW PRODUCTS 86F4 is a full flow tee fitting designed for duct and piping systems where maintaining maximum airflow through all three ports is critical. Unlike standard tee fittings that restrict flow at the branch, the full flow design allows fluid or air to pass through each leg of the tee with minimal turbulence and pressure drop. This fitting measures 4 x 4 x 4 inches across all three openings, making it a symmetrical, equal-leg configuration. HVAC technicians and plumbers specify this type of fitting when balancing flow distribution is a priority in the system layout.

The 86F4 is suited for residential and light commercial HVAC, plumbing, or fluid handling applications where a consistent bore diameter is required throughout the tee connection. It is an appropriate choice in supply or return trunk configurations, branch takeoffs, and inline distribution assemblies where a standard reducing or swept tee would create unacceptable flow restriction. Installation is performed by licensed HVAC technicians or plumbers depending on the system type and local code requirements.

Key Features

• Equal 4 x 4 x 4 inch port dimensions for balanced, symmetrical flow distribution
• Full flow bore design minimizes pressure drop across all three legs
• Symmetrical configuration simplifies layout in tee intersections
• Compatible with standard 4-inch duct or piping connections

Compatibility

Designed as an OEM-style replacement or direct-fit component for 4-inch duct or piping systems requiring a full flow tee connection at an equal three-way junction.

Installation Notes

Installation should be performed by a qualified HVAC technician or licensed plumber in accordance with applicable local mechanical or plumbing codes. Shut down and de-energize the system before beginning any fitting replacement or new installation work. Verify that all mating connections are clean, properly aligned, and secured before returning the system to service. Do not overtighten mechanical connections or apply joint compounds incompatible with the fitting material.

Technical Specifications

• Connection Size: 4 x 4 x 4 inches
• Configuration: Equal leg full flow tee

Standard Information

• Brand: AIR FLOW PRODUCTS
• Manufacturer Part Number: 86F4