Rubber expansion bellows (or joints) are flexible, convoluted connectors designed to absorb thermal expansion, contraction, vibrations, and pipe misalignment in piping systems. They protect pumps, valves, and pipelines from stress and noise,, often featuring reinforced synthetic rubber (EPDM, NBR, Neoprene) with metallic flanges.
Key Features & Components
Flexibility: Designed to accommodate axial (compression/extension), lateral (misalignment), and angular movements.
Materials: Constructed using synthetic rubber compounds like EPDM (weather-resistant), NBR (oil-resistant), and Neoprene (chemical resistance).
Reinforcement: The carcass is reinforced with high-tensile fabric (nylon/rayon) or steel cord to provide pressure-bearing capacity, with arches (single or multiple) designed to handle movement.
Flanges: Features metal flanges (often ANSI 150# or custom) for secure, bolted connections.
