Repeat Problem 11.38, but replace the globe valve with a butterfly valve and use a DN 125 Schedule 40 steel pipe. Compare the results of Problems 11.38€“11.41.

Repeat Problem

Figure 11.31 depicts a DN 100 Schedule 40 steel pipe delivering water at 15°C from a main line to a factory. The pressure at the main is 415 kPa. Compute the maximum allowable flow rate if the pressure at the factory must be no less than 200 kPa.

Fully open globe val ve 200 kPa 415 kPa Factory DN 100 Schedule 40 steel pipe Main line Flow 100 m