Non-Metallic Expansion Joint
Non-Metallic Expansion Joint is a coefficient of expansion designed to absorb displacement caused by temperature changes in duct systems, thereby relieving thermal stress. It can also serve to absorb vibration and compensate for small installation errors in ducts or equipment. Non-Metallic Expansion Joints are made from various non-metallic materials, such as synthetic rubber, fibers, insulation materials, and fluororesin, depending on the design requirements.
Since its introduction in the 1960s, the application of Non-Metallic Expansion Joints has continued to expand. The emergence of more stringent environmental regulations has led to increasingly complex duct systems, and Non-Metallic EJs have been developed to address the problems caused by thermal and mechanical stresses in these systems. Although primarily used in the power generation industry, Non-Metallic EJs are now being increasingly applied in all industries that transport gases.
1) Power generation industry
- Thermal power plants
- Gas turbine power plants
- Waste heat recovery power plants
- Nuclear power plants
2) Pulp and paper industry
3) Oil refining facilities
- Petroleum industry
- Chemical plants
4) Iron and steel manufacturing facilities
5) Foundry facilities
6) Cement industry
7) Waste incineration facilities
8) Shipbuilding industry
9) Food processing facilities
10) HVAC systems
1) Large displacement: NON-METALLIC E/J can absorb synthetic displacement within a smaller interlayer distance.
2) Small load: It generates very little force due to deflection or to move the E/J.
3) Corrosion resistance: NON-METALLIC E/J can be applied with a wide range of rubber, fiber, and fluororesin materials appropriately selected for the application.
4) Sound and vibration absorption: It has excellent properties for reducing vibration and noise.
5) High-temperature application: NON-METALLIC E/J can be applied even at operating temperatures above 2000°F.
6) Cost savings: It reduces costs through design cost savings, reduced product quantity, and simplified system structure.
7) Lower material costs: It allows for the use of materials suitable for corrosive environments.
8) Reduced transportation and installation costs: It is lightweight and can minimize on-site assembly.
9) No need for gaskets: The product itself can serve as a gasket.
10) Lower replacement costs: Replacement work can be easily carried out within a minimum downtime.
Flexible element made into a flat belt-like synthetic joint.
Synthetic joint with a flexible element and a flange formed perpendicular to it.
Expansion Joint type that applies both belt and flange types to a flexible element for expansion and contraction.
