A. pump delivers 6.0 cfs of 68F water to a holding tank 65 ft above the supply

Question:

A. pump delivers 6.0 cfs of 68°F water to a holding tank 65 ft above the supply reservoir. The suction s ide possesses a strainer (K~ = 2.5), a foot valve (Kv = 0.1 ), and 35 ft of cast-iron pipe, l 0 in. in diameter. Determine the allowable height the pump can be placed above the supply reservoir to avoid cavitation if the NPSH is l 5 ft. (Note: The strainer incorporates the entrance loss.)