I have a water tank that is on a higher elevation that needs to be filled with water from the bottom tank. Would it be possible for the the pump to be on the top? This will greatly save me some money on the wiring cost and basically the safety of my control system equipment and pump as it wont be in a public area.
One of the most obvious problem is water from the top tank will go back to the lower tank, but placing a check valve solves that problem.
My second problem is a portion of the piping has to go above by 50cm above the tank, the issue with this I will be losing the "prime" of my pump, as water inside the higher elevation pipe will go to the tank. My solution to this is maybe to put a secondary check valve before the motor and rely on the minimum pressure for the check valve not to open.
Is there a better way of doing this?
I measured the height and lowest to highest point is 8m. Single pipe 3/4 inch inner diameter. The motor is a 1HP unfortunately the brand is unreadable, but it looks like a centrifugal pump (inlet in the middle and outlet on the top).