Description of turbine. The Banki turbine consists of two parts, a nozzle and turbine runner. The runner is built up of two parallel circular disks joined together at the rim with a series of curved blades. The nozzle. whose cross-sectional area is rectangular, discharges the jet the full width of the wheel and enters the wheel at an angle of 16 degrees to the tangent of the periphery of the wheel. The shape of the jet is rectangular, wide, and not very deep. The water strikes the blades on the rim of the wheel (Figure 2), flows over the blade, leaving through the empty space between the inner rims, enters a blade on the inner side of the rims, and discharges at the outer rim. The wheel is therefore an inward jet wheel and because the flow is essentially radial, the diameter of the wheel is practically independent of the amount of water impact, and the desired wheel breadth can be given independent of the quantity of water.