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Question:

water pump for cabin?

Im looking at putting a little cabin on my property for hunting. i have a 200 gallon under ground water tank for fresh water. I'm needing a pump to run water into the cabin for a sink toilet and possibly a shower. does anyone know what style pump i will need so that it does not constantly build up pressure when not in use that way i don't burn it up.

Answer:

The way wells work is there's a pump at the bottom. It pumps water into a holding tank that has a diaphragm separating water from an air charge. There's also a pressure sensor switch that kicks the pump on when the pressure in the water tank drops below 40 PSI and shuts it off when it reaches 60 PSI. Well water systems don't just run the pump constantly, or they would burn up. What you want to do is use your storage tank as a source. Pump that into a smaller holding tank from a well water system so that when you run the water you run it from the pressure in the holding tank. When the pressure is low enough the main tank pump will pump up the pressure in the holding tank back to 60 PSI and shut off again. It's well worth it to make sure you don't have leaks. Otherwise your main tank will end up empty and the pump will run on and on. Which is another thing you have to watch for. You can install a float level switch so that if the water in the main tank drops below a certain level it shuts the pump off. AND you can also have it switch a warning light on so you know when the big tank is empty. Hope this helps. '')

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