A Peerless Type 4AE11 centrifugal pump (Fig. C.3, Appendix C) is tested at 1750 rpm using a flow system with the layout of Example 10.4. The water level in the inlet reservoir is 3.5 ft above the pump centerline; the inlet line consists of 6 ft of 5 in.

diameter straight cast-iron pipe, a standard elbow, and a fully open gate valve. Calculate the net positive suction head available

(NPSHA) at the pump inlet at a volume flow rate of 1000 gpm of water at 80 F. Compare with the net positive suction head required (NPSHR) by the pump at this flow rate. Plot NPSHA and NPSHR for water at 80 F and 180 F versus volume flow rate.