Quote:
Originally Posted by Subrosa
...The only non-sensible way that works is to use a second pump on a float switch, which will one day fail. In your case that would result in a burned out pump in your sump.
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You've made me think
. The pump would only fail if the water level in the tank fell below the siphon inlet so it seems to me that if one continually checked the water level and added water as needed the system should continue to work.
In any case I'd planned to make a mockup of the system to check it before actually installing it so if it fails, well, at least I won't have installed it and find it went kaput.
As for the waterfall introducing air into the system I can't see how that might happen since any air introduced thus wouldn't get into the return tube since it will be immersed in a pool of water.
***Thought experiment: Put two pipes into a large watering trough and the other two ends attached to a pump of some sort, start the pump or hand crank it. It should pump until the water level drops below the suction pipe. So would that be considered an open system or a closed system? Either way it will work indefinitely (or until the water level drops too far).
In any case I appreciate your input.
Robert
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