A Flange facilitates the connection between the tank and other parts in a fluid line. It is a flat or raised circular plate with bolt holes around its perimeter. The flange is designed to be attached to the opening of the expansion tank, allowing for the secure and leak-free connection of pipes, valves, or other equipment. The purpose of a flange in an expansion tank is to provide a reliable and robust connection between the tank and the rest of the fluid line. It ensures the fluid flows smoothly into and out of the tank without any loss or interruption. Attributes:• Can withstand high pressures and forces • Provide a secure and reliable connection Applications:A Flange provides a reliable and robust connection between the tank and the rest of the fluid line.