PVC Pipe Schedule 40 - Friction loss and Velocity Diagram

Friction loss (psi/100 ft) and velocity for water flow in plastic PVC pipe schedule 40

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The diagram below indicates friction loss for water flow through plastic schedule 40 PVC pipe.

Plastic Schedule 40 PVC Pipe - Friction loss and Velocity Diagram

The calculation is based on the Hazen-Williams Equation with a Hazen-Williams coefficient c = 140. Note that velocities above 5 feet per second should be avoided.

1 gal (US)/min =6.30888x10^-5 m³/s = 0.0227 m³/h = 0.06309 dm³(litre)/s = 2.228x10^-3 ft³/s = 0.1337 ft³/min
1 ft/s = 0.3048 m/s
1 psi (lb/in²) = 6,894.8 Pa (N/m²) = 6.895x10^-3 N/mm² = 6.895x10^-2 bar = 27.71 in H₂O at 62^oF (16.7^oC) = 703.1 mm H₂O at 62^oF (16.7^oC) = 2.0416 in mercury at 62^oF (16.7^oC) = 51.8 mm mercury at 62^oF (16.7^oC) = 703.6 kg/m² = 2.307 Ft. H₂O

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Fluid Flow and Pressure Drops in Pipe Lines Pipe lines - fluid flow and pressure loss - water, sewer, steel pipes, pvc pipes, copper tubes and more
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