VVGF flexible joint

Purpose

Flexible joints cancel out any potential vibrations transmitted by the fans or air handling units to the air ducting as well as partially compensate for the air duct assembly deformations caused by temperature variation.

Design

The flexible joints are formed by two flanges joined with vibration-cancelling material and are made of zinc-plated sheets and PVC tape reinforced with polyamide fabric. The joints are not intended to withstand any significant mechanical loads and, therefore, may not be used as load-bearing structures.