The interchangeable membrane keeps water and air separated and avoids any contamination, corrosion and pressure loss. Once connected to the water system, the pump starts to raise the pressure letting the water filling in the bladder.
When the pressure reaches its maximum threshold value, the pump stops. Inside the tank there is the greatest quantity of water possible. Obviously the membrane is dilated and it occupies almost all the volume of the tank. If water is required by the system, it starts fl owing out of the tank without using the pump but just exploting the pressure of the air cushion.
The process goes on and the membrane defl ates until the pressure reaches its minimal threshold value. At this stage the membrane is buck to its initial dimensions, the pump starts again and a new cycle begins. Since the funk always grants the maximum water fl ow, pump insertions are reduced to the minimum.