Need to calculate the velocity at the pump suction as well as the total dynamic head at he pump suction. I have the data as in the image below. Fluid is water in the system. The inlet is a 2 inch pipe and outlet is 1 inch. Impeller size is 191.5mm. How would I do this? Please show all working and formula. (in image density of water is cut off, using 1000kg/m^3)

Table 2: Calculated results for all valve settings (using Gravity =9.81ms2, density of H2O= \begin{tabular}{|c|c|c|c|c|} \hline & Trial 1 & Trial 2 & Trial 3 & Trial 4 \\ \hline The (Gauge) Suction Pressure Head (mH2O) & 0.815 & 1.325 & 1.580 & 1.580 \\ \hline The Velocity at the Pump Suction (m/s) & & & \\ \hline The Total Dynamic Head at the Pump Suction (mH2O) & & & & \\ \hline \end{tabular}