Water: Maximum flow through Flexible PVC Pipe April 22, 2026 22:56 Updated Approximate Maximum Flow Through Flex Pipe1.5" Flex Pipe: 2,200 GPH (gallons per hour) ≈ 8,327 liters per hour (LPH)2" Flex Pipe: 4,800 GPH ≈ 18,170 liters per hour (LPH)3" Flex Pipe: 11,500 GPH ≈ 43,532 liters per hour (LPH) Related articles Check Valve Replacement Parts Who handles warranty for Amazon purchases? What affect does chlorine have on the pipe? How are Aquascape Faux Basalt Columns made?