You can select the optimum piping (pressure piping) size with a simple operation.◎ Compatible with various piping materials.◎ You can select the unit to use.◎ User piping selection criteria can be saved.◎ The amount of water can be calculated by automatically converting it to the amount of water used at the same time according to the water supply load unit.◎ The hydraulic formula is Hazen-Williams,You can select the Darcy-Weisbach formula (Darcy-Weisbach).