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Bubbles in water glass

Good eve. I was on a job today. When firing boiler I noticed bubbles rising in the water glass. The bubbles stayed on top of glass for a good few minutes without breaking up. I am assuming that those were steam bubbles and they were trapped by oil on top of the glass. I don't recall seeing anything similar in past. The water was moving up and down more then it should but not nearly as bad as many that I have seen. Any insight would be greatly appreciated.

Comments

  • Blowing out the bubbles

    You could always install a small ball-valve on the bottom gauge-cock, and blow out any oil which may have accumulated. Following that you could see how long it took for the bubble phenomenon to reappear.--nbc
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