The Danfoss range of PAHT high-pressure pumps is specifically designed for use with technical water such as:• Ultra-pure water that has undergone multiple reverse osmosis processes• De-ionized water• Demineralized waterDanfoss PAHT pumps are positive displacement pumps, with axial pistons that move a fixed amount of water in each cycle. Flow is propor- tional to the number of input shaft revolutions (rpm). Unlike centrifugal pumps, they produce the same flow at a given speed independently of no matter what the discharge pressure.