This application is used in conjunction with the Dwyer 490W hydronic kit, including the new 490W low noise sensors. This app allows the user to select a valve and measure the differential pressure and flow across the valve. The application communicates with two pressure transducers wirelessly to come up with the differential pressure and flow. We have an extensive library of all valves to eliminate the use of wheels to calculate flow. No hoses means cleaner dryer faster.