Answer :

Final answer:

A pressure relief valve or safety valve is essential in protecting air tanks and hydraulic systems from excessive pressure by opening at a predefined limit to release excess pressure, thus ensuring safety and preventing damage.

Explanation:

The valve that protects the air tanks and the rest of the system from building too much pressure is known as a pressure relief valve or a safety valve. These valves are engineered to open at a predetermined pressure level to prevent the system from exceeding safe pressure levels. If the pressure within a tank reaches this set limit, the valve opens to allow some of the gas or liquid to escape, thus reducing the pressure inside the tank and protecting it from potential damage such as bursting.

For example, in a scenario where an air pump doubles the amount of gas in a canister, the increased air molecules striking the inside walls would double the pressure. A pressure relief valve would then act to release some of this excess pressure, safeguarding the canister from damage.

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Rewritten by : Barada