Aluminum Flange Connector for Ventilation Pipe Air Ducting Connection Rain Water Pipe

An aluminum flange connector is a fitting that creates a secure, standardized connection point between two sections of ducting or pipe. It is commonly used for ventilation systems, air ducting, and rainwater downpipes to ensure airtight or watertight mechanical joints.

Aluminum flanges are lightweight, corrosion-resistant, low maintenance, and 100% recyclable. They also offer high thermal conductivity which reduces condensate wet time and corrosion risk in vent applications.

Match the flange diameter to both the pipe/duct diameter and the equipment port diameter. Common sizes include 4-inch, 6-inch, 8-inch, and 10-inch for ventilation, and 63mm to 101mm for rainwater downpipes. Verify sizes before ordering.

A flange connects same-diameter sections, while a reducer transitions between two different diameters. For example, a 6-inch flange connects a 6-inch fan to a 6-inch duct, whereas a 6-to-4-inch reducer connects a 6-inch fan to a 4-inch duct.

Slip the flex duct end over the flange spigot, wrap the connection with two full wraps of 2-inch aluminum foil tape, and add a worm-gear hose clamp for mechanical security. Avoid over-tightening to prevent duct deformation.