A self-priming Silent peripheral pump for both hot up to 90° and cold water. This pump is used to achieve the automatic running according to the water pressure, and the start and stop of this machine is controlled by the valve. The electronic pressure switch applied is adjustable and visible which means that the start and stop pressures can be adjusted depending on the actual working pressure. It’s widely used in household water supply, well water pumping, tap water pressure, water tower's supply and solar or hot water systems pressure.