How do water pressure systems work?


Quick Answer

Water well and pressure systems use pumps to remove water from the wells and store it under pressure so that when users opens taps inside their homes, water flows into the fixtures. The system uses switches to activate the pump when the pressure or water level drops too low and shut them off when it reaches the set level, which saves wear on the pump.

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Full Answer

Some systems use pressure tanks to store the water and pressure the pump builds. With these systems, the pressure activates the switches. The pressure tank has an air bladder that the water compresses as it fills the tank. When the tap opens, the compressed air forces the water out of the tank to the home. At the lower limit, the pump switches on to continue providing water. It continues to operate until the tap closes and the pressure in the tank reaches the upper limit.

In some systems, storage tanks provide the pressure. The pump pushes water from the well into the tank until the upper-limit float switch stops it. Gravity forces water through the open tap until the lower-limit switch activates the pump. The pump continues to add water to the tank, and gravity delivers it to the home.

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