Types, Advantages, and Principal Uses of Expansion Bellows
Industrial piping may look rigid, but it is constantly moving. Temperature changes, pressure, vibration, and equipment movement can all place stress on connected components. That is where expansion bellows earn their place. These flexible components help piping systems absorb controlled movement while reducing unwanted loads on pipes, equipment, and connections. What Are Expansion Bellows? An expansion bellow is a flexible, corrugated component designed to accommodate movement in a piping or equipment system. Think of it like a carefully engineered buffer between two rigid sections. Instead of forcing the pipework to absorb every change in dimension, the bellows flexes within its designed movement range. According to the Expansion Joint Manufacturers Association (EJMA), bellows are generally made from relatively thin-walled tubing formed into corrugations, or convolutions. These convolutions provide the flexibility needed to handle movement while allowing the component to contain s...