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What is the function of safety valves in the boiler?

What is the function of safety valves in the boiler? Correct Answer To prevent excessive steam pressure

The function of safety valve is to prevent the excessive steam pressure inside the boiler drum exceeding the design pressure. When the pressure inside the boiler drum exceeds the rated pressure, safety valve automatically opens and discharges the steam to the atmosphere till normal working pressure is retained.

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For the safety of a steam boiler the number of safety valves fitted are
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