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Gasket insert, uncompressed, the trapezoidal form is clearly visible.
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Meter fitted, gasket compressed, at room temperature.
The greatest compression pressure is at the measuring tube end of the gasket, forcing it to expand only into the expansion chamber.
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Elevated temperature with meterfitted and gasket compressed.
The compression chamber is almost completely filled. The gasket does not bulge excessively into the measuring tube.
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