What is the flow rate of water through a 0.5 inch pipe at 40 psi?

The flow rate of water through a 0.5-inch pipe at 40 psi can be estimated using the Hazen-Williams equation or empirical formulas, but it generally depends on factors like pipe length and roughness. For a 0.5-inch diameter pipe, the flow rate is typically around 4-10 gallons per minute (GPM) at 40 psi, depending on these conditions. For more precise calculations, specific formulas or fluid dynamics software may be needed.