Fabric bellows are made from multi layered fabrics and fitted with either flanges or pipe ends. These units are suitable for high amount of axial movement and lateral movements. Not suitable for liquid flow medium. These bellows have distinct advantages as they can accommodate relatively large movements and even some misalignment of flanges. They are also lightweight, easy to install and with the addition of internal insulation bolsters have good acoustic properties.
Fabric bellows are found wherever there is a need to convey hot media in low-pressure applications such as in flowing air and outflowing gas in large combustion processes.
Fabric expansion joints can absorb larger movements than metal expansion joints and do so without spring loads. This is critical to limiting thermally induced stresses in ducting, ducting supports, and related equipment.
Features
High-temperature expansion joints are of multi-layered construction tailored from piles of selected materials including:
• High-Performance technical fabrics (often woven with Chrome Steel or Nickel Alloy wire reinforcements)
• Insulating felts
• Metal foils
• Elastomer films
• Elastomer coated fabrics
• Fine woven high-temperature wire cloth
Pressure ranges up to 0.2 kg/cm2,
Temperature range up to 1200 Degree C (special units for low pressure and high movements requirements)
