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Fabric Expansion Joint
Non - Metallic (Fabric) Expansion joint are flexible connectors
designed to provide stress relief in ducting systems by absorbing
movement caused thermal change particularly for low pressure
applications. They also act as vibration isolators, shock absorbers and
in some instances to make up for minor misalignment of adjoining
ducting or equipment. For low pressure ducting systems handling gaseous
media, which is likely to adversely react with most of the metals,
fabric compensators can be the optimal solution.
Features
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Large movements
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Low load on anchors
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Corrosion resistance
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Sound and vibration elimination
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High temperature
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Lower material cost
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Lower system design cost
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Lower replacement cast
However, metal bellows are completely sealed units and can be designed
for very high pressure and temperatures in comparison to fabric where
the pressure is limited to 2000 mm WC and they are leak proof as far as
practicable.
Range
Pressure
+/- 2000 mm WC.
Size
150 mm NB up to 3500 mm NB. For rectangular sizes there is no size
limitation.
Temperature
Special design can be made up to a maximum temperature of 1100ºC.
Materials
Elastomer coated fabric of the top layer and inner layer of insulating
fabric with other layering as per the system requirement.
Construction
Single / Composite layering with various end connections and internal
arrangements.
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