Get Steamy with the Class 5 Boiler Exam 2025 – Ignite Your Career Potential!

Question: 1 / 400

What is the purpose of a sight glass in a boiler?

To observe the flame inside the boiler

To measure the pressure within the boiler

To indicate the water level in the boiler

The sight glass in a boiler serves a critical function by providing a direct visual indication of the water level within the boiler. This is essential for the safe and efficient operation of the boiler, as the water level must be maintained within specific limits to ensure proper heat exchange and to prevent damage. Operating with too low of a water level can lead to overheating and potential damage to boiler components, while too high a level can lead to water carryover into the steam system, causing issues in downstream equipment. Therefore, the sight glass allows operators to quickly and accurately gauge the water level, facilitating timely adjustments and ensuring that the boiler operates within safe parameters.

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To ensure safe air venting

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