#1) The figure below shows a piping system that consists of a line connected to two branches. When a bypass branch is closed off with its valve, the flow line is to deliver 0.3 ft /s of benzene with a pressure drop of P, P2 = 8.5 psi. Find a suitable size for the pipe if it is made of uncoated cast iron and has regular threaded fittings. The length of the pipe required is 700 ft. Due to cost considerations, it is better to use schedule 40 pipe. See the fig just below. gate valve 10 ft 8 ft bypass