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Oxyacetylene Welding (OAW) - page 10 / 42

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Pressure Regulators Gauges Using a “Bourdon” movement  

Gas entering the gauge fills a Bourdon tube

As pressure in the semicircular end increases it causes the free end of the tube to move outward.

This movement is transmitted through to a curved rack which engages a pinion gear on the pointer shaft ultimately showing pressure.

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