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Questions and Answers
What is the purpose of a vacuum breaker in a boiler system?
What is the purpose of a vacuum breaker in a boiler system?
- To draw water into the boiler from the feedwater system
- To release air and non-condensable dissolved gases from the boiler during warm up
- To allow air to enter the boiler when the pressure drops below atmospheric (correct)
- To prevent steam from escaping the boiler
Where is a vacuum breaker typically installed in a boiler system?
Where is a vacuum breaker typically installed in a boiler system?
- On top of the water column
- At the bottom of the shell
- On top of the shell
- On the water column steam piping connection to the boiler (correct)
What is the purpose of a drum vent valve in a boiler system?
What is the purpose of a drum vent valve in a boiler system?
- To release air and non-condensable dissolved gases from the boiler during warm up (correct)
- To prevent steam from escaping the boiler
- To allow steam to enter the boiler when it is being drained
- To draw water into the boiler from the feedwater system
Why is it important to prevent a vacuum from forming in a boiler?
Why is it important to prevent a vacuum from forming in a boiler?
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What is the purpose of an air separator in the supply line to a hot water heating system?
What is the purpose of an air separator in the supply line to a hot water heating system?
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Why is a gauge glass usually fitted on the expansion tank of a hot water heating boiler?
Why is a gauge glass usually fitted on the expansion tank of a hot water heating boiler?
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What is the purpose of a stop valve in the steam outlet of a single steam heating boiler system?
What is the purpose of a stop valve in the steam outlet of a single steam heating boiler system?
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Why may low-pressure steam heating boilers remain off for several hours or days during spring or fall months?
Why may low-pressure steam heating boilers remain off for several hours or days during spring or fall months?
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