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Cylindrical Water Heater Construction Questions
Hello:
Never had the opportunity to look inside one, but as we just had a new wter heater installed, I became curious. It's the typical upright cylindrical kind, gas fired. Was wondering: Is the unit designed to keep a certain water level always in the tank, or is it designed to trap an air bubble at the top ? There isn't any float regulator inside, to the best of my knowledge. How does this work ? If it truly fills totally with water, isn't the internal water pressure, with no elastiucity, a problem ? How do they maintain such a good (hopefully) seal at the top of the tank ? I imagine that the tank is fabricated from rolled steel, with a top and bottom fastened on somehow. How is this done and sealed ? Any pix on the web showing internal construction ? Couldn't find any. Thanks, Bob |
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