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Safety valve function in boilers: select the correct purpose. Context: Overpressure protection is mandatory to prevent boiler explosions and protect equipment and personnel. Choose the correct function of a safety valve.

Difficulty: Easy

Correct Answer: To blow off steam when internal pressure exceeds the working pressure

Explanation:

Concept
The safety valve is a pressure-relief device that automatically releases steam if the boiler pressure exceeds the set working (or design) limit, preventing catastrophic overpressure.

Not to be confused with

  • Water level indication (gauge glass or water level indicator).
  • Pressure measurement (Bourdon pressure gauge).

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