Quote:
Originally Posted by masraum
Water heaters can explode even if they are electric. They have a pressure limiting valve. I don't know if they have another layer of safety specifically for over-pressure, but if they over heat and the pressure limiting valve fails, they can explode in spectacular fashion. I'm not saying that's what that was, but it is possible.
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AFAIK the pressure valve is the only safety and if it fails, a WH will explode. It usually will look like a Estes Rocket. The video is showing a combustible substance (ie natural or propane gas).
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