Francis turbines are used mainly for medium heads and relatively low fluctuation of the water discharge. Francis turbines by VAPTECH demonstrate proven smooth performance in terms of efficiency, lack of cavitation and vibration in the complete specific speed range from ns 80 to ns 300.
The runner is a welded construction of high quality stainless steel casting for the crown, band and blades. The finished runner is controlled and accepted according to the IEC standards.
Francis turbine by VAPTECH is fully assembled in our workshop and it is tested for functionality and under pressure. The assembled and tested turbine is delivered at site ready for a fast and smooth installation.