Engineering & Design Data - Spears Manufacturing, PVC ...

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Where: f = friction head of feet of water per 100' for the specific pipe size and I.D. C = a constant for internal pipe roughness. 150 is the commonly accepted value for PVC and CPVC pipe. G = flow rate of gallons per minute (U.S. gallons). di = inside diameter of pipe in inches. Nominal Size 1/2 3/4 1 1-1/4 1-1/2 2 2-1/2 3 4 6 8 10 12

  Flows, Size, Pipe, Pipe size, For pvc