What is the capacity of a ¾” schedule 40 propane line 324′ long, and inlet pressure of 2 psi, a pressure drop of 1 psi and a gas specific gravity of 1.50?

What is the capacity of a ¾” schedule 40 propane line 324′ long, and inlet pressure of 2 psi, a pressure drop of 1 psi and a gas specific gravity of 1.50?