After flows in a new 20-cm, 300-m-long ductile iron pipe between reservoirs A and B, as shown in Figure P4.2.l. The pipe is elevated at S, which is 150 m downstream from reservoir A. The water surface in reservoir B is 25 m below the water surface in reservoir A. If ˆ†s = 7.0 m, is cavitation a concern?

Figure P4.2.l

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Gate valve