- Stress relief for piping and ducting systems.
- Absorbs thermal growth and shock.
- Isolates mechanical vibration.
- Simple retrofit into existing ducting system.
- Cost-effective solution to compensate for movement in ducting systems.
Fabric pipe expansion joints are often used in ducts which carry hot gases at low pressures. The major design parameters are the temperatures and flow rates of the gases and the amount and abrasiveness of solids suspended in the gases. Layers of different fabrics insulation can be combined to accommodate the temperatures and pressure in the system. The fabric belt may need to be replaced periodically. Fabric expansion joints are extremely flexible and can be made from a variety of special woven fabrics coated or laminated with selected elastomers or fluoropolymers.
Fabric expansion joints are used to insulate, to avoid mechanical loads and to protect against abrasion. They offer advantages for the pipe work designer as they can absorb movements simultaneously in several directions. Further, they have almost no reactive forces and require little space. Fabric expansion joints are easy to customize to suit existing operating conditions and are easy to transport and install.
In comparison to metallic expansion joints fabric offers almost unlimited flexibility, giving the pipe work designer more options. Fabric expansion joints are installed in systems operating with low pressure and dry media. These expansion joints are used to add flexibility to industrial ducting systems and fan/blower connections to absorb thermal growth, isolate vibration and noise, and allow for misalignments. Their large movements in each space, small spring rates, and large temperature range give them advantage not available with other types of joints. They are needed in a wide array of industries, including power, petrochemical, pulp & paper, along with countless other industrial facilities.