Din 19704 Pdf Link File

If you are outside of Germany, international standard aggregators like the IHS Markit (now S&P Global)

DIN 19704 is a German national standard that outlines the requirements for the design, manufacture, and testing of hydraulic turbines, pump-turbines, and storage pumps. The standard is published by the German Institute for Standardization (DIN) and is widely adopted in the industry. din 19704 pdf link