SailNet Community - View Single Post - Water tanks and a hot day, be aware!!!
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Old 08-06-2007
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Tanks need to be vented to accept volume fluctuations due to temperature. Change in volume is what makes water break concrete when it freezes and thaws. It will do the same thing to your tank when it heats and expands with nowhere to go. Make sure your vent are clear, sometimes insects build nests in there, and eventually block the vent line.
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