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The Laminate

Formed and bonded under high heat and pressure, the diaphragm laminate is generally structured in one of the following two forms:
Single-Coat Construction

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For use in single-acting cylinders (pressure applied in only one direction). A single layer of elastomer is bonded to one side of the base fabric. This construction is generally employed in long-stroke diaphragms. |
Double-Coat Construction

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Used in double-acting cylinders (pressure
applied alternately in each direction) or where
extra durability is required and the stroke/diameter
ratio is not excessively large. Elastomer is
bonded to both sides of the fabric. |
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