The water pump in Fig P6.108 maintains a pressure of 6.5 psig at point 1. There is a filter, a half-open disk valve, and two regular screwed elbows. There are 80 ft of 4-inch diameter commercial steel pipe. (a) If the flow rate is 0.4 ft3/s, what is the loss coefficient of the filter? (b) If the disk valve is wide open and Kfilter = 7, what is the resulting flow rate?

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9 ft Valve Elbows Filter Pump