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If you order in the next 4 hours and 54 minutes your order will ship today, drop ship and pallet orders may ship tomorrow.
In observance of the Thanksgiving holiday, Irrigation Direct will be closed on Thursday and Friday, November 27th & 28th. Website orders placed after 3pm Wednesday, November 26th, will be shipped on Monday, December 1st. (Pacific Standard Time). Pallet and Drop Ship orders may ship next day (Excluding Saturday & Sunday) Have a safe and Happy Thanksgiving Holiday!

Table Velocity Flows same for all








Schedule 40 thermoplastic pipe



















VELOCITY FLOWS


























SCHEDULE 40 PVC PIPE















  Nominal Pipe Size  
Velocity 1/2 in 3/4 in 1 in 1-1/4 in 1-1/2 in 2 in 2-1/2 in 3 in 4 in 6 in 8 in 10 in 12 in Velocity
ft/s Flow: gpm* ft/s
1 0.9 1.6 2.6 4.5 6.2 10.3 14.6 22.7 39.1 89.0 154.4 243.6 346.0 1
2 1.8 3.2 5.2 9.1 12.4 20.5 29.3 45.3 78.3 178.1 308.8 487.2 692.0 2
3 2.7 4.7 7.8 13.6 18.6 30.8 43.9 68.0 117.4 267.1 463.2 730.9 1038.1 3
4 3.5 6.3 10.4 18.1 24.8 41.0 58.5 90.6 156.5 356.2 617.6 974.5 1384.1 4
5 4.4 7.9 13.0 22.6 30.9 51.3 73.2 113.3 195.6 445.2 772.0 1218.1 1730.1 5
6 5.3 9.5 15.6 27.2 37.1 61.5 87.8 135.9 234.8 534.2 926.4 1461.7 2076.1 6
7 6.2 11.1 18.1 31.7 43.3 71.8 102.4 158.6 273.9 623.3 1080.9 1705.4 2422.1 7
8 7.1 12.7 20.7 36.2 49.5 82.1 117.1 181.2 313.0 712.3 1235.3 1949.0 2768.1 8
9 8.0 14.2 23.3 40.8 55.7 92.3 131.7 203.9 352.2 801.4 1389.7 2192.6 3114.2 9
10 8.9 15.8 25.9 45.3 61.9 102.6 146.3 226.5 391.3 890.4 1544.1 2436.2 3460.2 10
11 9.8 17.4 28.5 49.8 68.1 112.8 161.0 249.2 430.4 979.4 1698.5 2679.9 3806.2 11
12 10.6 19.0 31.1 54.3 74.3 123.1 175.6 271.8 469.5 1068.5 1852.9 2923.5 4152.2 12
13 11.5 20.6 33.7 58.9 80.5 133.3 190.2 294.5 508.7 1157.5 2007.3 3167.1 4498.2 13
14 12.4 22.2 36.3 63.4 86.6 143.6 204.9 317.1 547.8 1246.6 2161.7 3410.7 4844.3 14
15 13.3 23.7 38.9 67.9 92.8 153.9 219.5 339.8 586.9 1335.6 2316.1 3654.4 5190.3 15
* Flows calculated with factors in Table 320 may vary slightly due to rounding off of factors.


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