TradeVerifyPlease give us your following data when make order:1.Head: Maximum head, minimumhead, design head;2.Flow: Full flow of the power station, design flow of the unit;3.Capacity of the power station: Capacity of each unit, unit qty;4.Elevation: Horizontal centerline of turbine and tailrace;5.Temperature condition:Maximum temperature over any year;6.Length and diameter of penstock;7.Condition of water quality: Such as sand content etc.8.Operating Manner of your stationIf any special requirment, it can be discussed with us.