This presentation will briefly touch on the basics of fabric expansion joints; however, is mainly focused on the various designs, material details, and applications. Learn how fabric expansion joints are engineered and fabricated for various applications and the many factors that influence those designs. View the abundance of materials used, including Fluoroplastic and Fluoroelastomer, and their respective capabilities. Take a journey through a Fossil Fired Power Plant and see exactly where fabric expansion joints are required.
21. Expansion Joint Components Additional components are available to augment certain fabric expansion joint styles in specific applications. Insulation Pillow Drain Accumulation Barrier Bolt In Liner Particulate Deflector
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24. Materials Comparison Chart Furnaces, Kilns Low Low Excellent resistance to chemicals, High Temp. Stability Silica/PTFE Fabric with Kaowool High 1000 - 1800°F *3-layer Boiler Exhaust Low Low High abrasion resistance, Won’t rot or mildew Silica Fabric Cloth High 700 - 1000°F Exhaust Ventilation, Fume Protection, Gaskets or Seals Medium Low High tear / crease resistant; Smooth, low friction, non-stick surface, high tensile strength PTFE Impregnated Fiberglass, PTFE Coated Glass Cloth High 500 - 700°F Gaskets or Seals, Recirculation Air, Air Intake High Low Resistant to deterioration by weathering and engine oil remains Fiberglass, Reinforced Silicone Medium 250 - 500°F Hot and Cold Water, Low Pressure Steam, Neutral Solutions High Medium High Tensile Strength, Ozone and weathering resistance Butyl Rubber, Neoprene, Viton Low Ambient - 250°F Applications Chemical Resistance Pressure Advantages Materials Temperature
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34. Single Ply vs. Two Ply Elastomers – Rubber / Viton Reinforcement Reinforcement Elastomer Elastomer Typical 1/8 ″ thick belt with single ply reinforcement Typical 1/4 ″ thick belt with two ply reinforcement
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