Negative pressure at pump outlet
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I have a sulfuric acid pump here, with a PTFE flexible connection installed at its outlet. But recently, the soft connectors have often deflated. What could be the reason?
What is the fluid temperature? Could it be the temperature that’s the cause?
This post was last edited by ylb913 on 2015-11-18 at 12:33. Were both ends closed after the pump was stopped? It’s winter now; if you use a plastic bottle and collect one randomly from the surroundings, then leave it outside for a few hours, the bottle will usually become pressurized. The same thing often happens when the bottle is kept indoors as well. The key here is the decrease in temperature, which leads to a reduction in the saturated vapor pressure of the medium in a confined space.
Is the negative pressure resulting from the drop in the saturated vapor pressure of the medium that large?