How many galons of water will flow through a 2 inch pipe at 40 psi?

The flow rate of water through a 2-inch pipe at 40 psi depends on various factors, including the pipe's length, roughness, and any fittings or bends. However, a rough estimate using the Hazen-Williams equation suggests that approximately 1,200 to 1,900 gallons per minute could flow through a 2-inch pipe under those conditions. For a precise calculation, specific details about the pipe system would be necessary.