Pigging Pressures & Flows

Recommended pressures and flow rates for pigging can be found in this section.

Typical Differential Pressure in psiLiquid Flow gpmGaseous Flow scfm
Pipe I.D.for Launchingfor Running3 fps5 fps5 fps10 fps
2" 100-200 40-100 30 50 21 98
3" 100-150 35-85 70 100 46 172
4" 75-125 30-80 120 200 70 273
6" 50-100 30-75 250 450 134 498
8" 30-80 25-70 450 800 238 749
10" 30-60 25-50 750 1,250 317 957
12" 30-50 20-45 1,000 1,800 458 1,223
14" 20-50 15-40 1,400 2,500 518 1,665
16" 15-45 10-40 1,800 3,000 540 1,901
18" 15-40 10-30 2,000 4,000 683 2,406
20" 10-25 5-20 2,800 5,000 843 2,542
24" 10-25 5-20 4,000 7,000 1,214 3,661
30" 10-20 5-15 7,000 11,000 1,897 4,757
36" 10-20 5-10 10,000 16,000 2,732 6,850
40" 10-20 5-10 12,000 20,000 3,373 8,457
42" 10-20 5-10 13,000 22,000 3,718 9,324
48" 10-20 5-10 17,000 27,500 4,857 12,178

Notes: The above information is to be used as guidelines only and not to be considered absolutes. A number of factors can vary the above information including type of product, temperature, viscosity and type of pig being used.

*Numbers shown above for Gaseous flow assume no line pressure and only uses the gas to move pig. For accurate calculations on velocity of gas in feet per second we recommend using the following formula:

Pigging Pressures & Flows