Hi, my well pump is about 25 meters from the surface in a 60 meter well, but I don't have any system of protection for dry run. The pump is approx 1 hp (can't confirm because the label on pump is missing , but I think less than 1,5 hp)
But is it possible to drop a 2cm diameter pipe down, the top being connected to a water pressure switch (and the end of the pipe open) , say to 4 meters above the level of the pump, so that when the level of water falls, the end of the pipe will be out of the water, and the pressure switch will turn the pump off (and turn it on again when the water level rises). Is this how it works? Thanks.