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Table Velocity Flows same for all
Schedule 40 thermoplastic pipe
VELOCITY FLOWS
SCHEDULE 40 PVC PIPE
Nominal Pipe Size
Velocity1/2 in3/4 in1 in1-1/4 in1-1/2 in2 in2-1/2 in3 in4 in6 in8 in10 in12 inVelocity
ft/sFlow: gpm*ft/s
10.91.62.64.56.210.314.622.739.189.0154.4243.6346.01
21.83.25.29.112.420.529.345.378.3178.1308.8487.2692.02
32.74.77.813.618.630.843.968.0117.4267.1463.2730.91038.13
43.56.310.418.124.841.058.590.6156.5356.2617.6974.51384.14
54.47.913.022.630.951.373.2113.3195.6445.2772.01218.11730.15
65.39.515.627.237.161.587.8135.9234.8534.2926.41461.72076.16
76.211.118.131.743.371.8102.4158.6273.9623.31080.91705.42422.17
87.112.720.736.249.582.1117.1181.2313.0712.31235.31949.02768.18
98.014.223.340.855.792.3131.7203.9352.2801.41389.72192.63114.29
108.915.825.945.361.9102.6146.3226.5391.3890.41544.12436.23460.210
119.817.428.549.868.1112.8161.0249.2430.4979.41698.52679.93806.211
1210.619.031.154.374.3123.1175.6271.8469.51068.51852.92923.54152.212
1311.520.633.758.980.5133.3190.2294.5508.71157.52007.33167.14498.213
1412.422.236.363.486.6143.6204.9317.1547.81246.62161.73410.74844.314
1513.323.738.967.992.8153.9219.5339.8586.91335.62316.13654.45190.315
* Flows calculated with factors in Table 320 may vary slightly due to rounding off of factors.
SPRINKLER SYSTEM INFORMATION

Sprinkler irrigation systems are commonly used in lawn irrigation systems and other planted areas where a spray or mist is desirable. For plants that require uniform coverage of water (grass, ground cover, seeds) a sprinkler irrigation system is appropriate.

If you are installing lawn sprinkler irrigation systems, Irrigation Direct carries a variety of supplies and parts like an adjustable nozzles for Rain Bird sprinkler heads. Our shrub adapters are perfect for garden sprinklers and shrub zones.

Combine pop-ups and rotors with electronic sprinkler controllers (timers), and inline valves to automate your landscape sprinkler irrigation system. Browse our Sprinkler System Supplies and Parts to find sprinkler nozzles, bubblers, swing assemblies, cut-off risers, Marlex 90s, and more.

DRIP IRRIGATION SYSTEM INFORMATIONz

Drip irrigation is a watering method which delivers water to plants slowly and right where they need it at the roots. Where typical pop-up sprinklers spray water into the air and onto plants, drip irrigation systems combine flexible poly drip tubing and drip emitters or "drippers" to both conserve water and save money.

Drip irrigation systems are not affected by wind and will greatly reduce evaporation and runoff common with traditional irrigation systems. Drip irrigation is the perfect solution for raised vegetable garden beds, hanging baskets, and potted plants.

Learn how to plan, design, and install your own Drip Irrigation System with our FREE online Drip Irrigation Tutorials.

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