How much water can you pump through 4 poly pipe at a distance of 2000' and a pressure of 150 psi?

The flow rate of water through a 4-inch poly pipe can vary based on factors like the pipe's smoothness, elevation changes, and fittings. However, under optimal conditions at 150 psi, a 4-inch poly pipe can typically deliver around 1,000 to 1,500 gallons per minute (GPM) over a distance of 2,000 feet. It's essential to consider head loss due to friction and fittings, which could reduce the effective flow rate. Consulting specific flow rate charts or hydraulic calculations would provide more precise estimates for your conditions.