High- and low-pressure switches generally use a ____, which expands and contracts with a change of pressure.

Name: High- and low-pressure switches generally use a ____, which expands and contracts with a change of pressure.
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Question

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High- and low-pressure switches typically use a bellows, which is a type of sealed metallic container that expands and contracts with pressure changes. The movement of the bellows triggers the switch to turn on or off.

High- and Low-Pressure Switches Generally Use a ____, Which Expands