Questions and Answers
What is the purpose of a vacuum breaker in a boiler system?
To allow air to enter the boiler when the pressure drops below atmospheric
Where is a vacuum breaker typically installed in a boiler system?
On the water column steam piping connection to the boiler
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
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?
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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?
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Why may low-pressure steam heating boilers remain off for several hours or days during spring or fall months?
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