Pipe Line Velocities vs. Fluid
Typical fluid flow velocities for common liquids, gases and vapors.
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| Fluid | Typical Velocity | |
|---|---|---|
| (ft/min) | (m/s) | |
| Acetylene, steel pipe | 4000 | 20 |
| Air, 0-30 psi, steel pipe | 4000 | 20 |
| Ammonia, liquid, steel pipe | 360 | 1.8 |
| Ammonia, gas, steel pipe | 6000 | 30 |
| Benzene, steel pipe | 360 | 1.8 |
| Bromine, liquid, glass pipe | 240 | 1.2 |
| Bromine, gas, glass pipe | 2000 | 10 |
| Calcium Chloride, steel pipe | 240 | 1.2 |
| Carbon Tetrachloride, steel pipe | 360 | 1.8 |
| Chlorine, liquid, steel pipe | 300 | 1.5 |
| Chlorine, gas, steel pipe | 2000 - 5000 | 10 - 25 |
| Chloroform, liquid, steel or copper pipe | 360 | 1.8 |
| Chloroform, gas, steel or copper pipe | 2000 | 10 |
| Ethylene, gas, steel pipe | 6000 | 30 |
| Ethylene Dibromide, glass pipe | 240 | 1.2 |
| Ethylene Dichloride, steel pipe | 360 | 1.8 |
| Ethylene Glycol, steel pipe | 360 | 1.8 |
| Hydrogen, steel pipe | 4000 | 20 |
| Hydrogenchloric Acid, liquid, rubber lined pipe | 300 | 1.5 |
| Hydrogenchloric Acid, gas, rubber lined pipe | 4000 | 20 |
| Methyl Chloride, liquid, steel pipe | 300 | 1.5 |
| Methyl Chloride, gas, steel pipe | 4000 | 20 |
| Natural gas, , steel pipe | 6000 | 30 |
| Oil lubricating, steel pipe | 300 | 1.5 |
| Oxygen, stainless steel | 1800 - 4000 | 9 - 20 |
| Propylene Glycol, steel pipe | 300 | 1.5 |
| Perchlorethylene, steel pipe | 360 | 1.8 |
| Steam, 0-30 psi, saturated, steel pipe | 4000 - 6000 | 20 - 30 |
| Sulfuric acid | 240 | 1.2 |
| Sulfur Dioxide, steel pipe | 4000 | 20 |
| Styrene, steel pipe | 360 | 1.8 |
| Trichlorethylene, steel pipe | 360 | 1.8 |
| Vinyl Chloride, steel pipe | 360 | 1.8 |
| Vinylidene Chloride, steel pipe | 360 | 1.8 |
| Water, steel pipe | 180 - 480 | 0.9 - 2.4 |
- low pressures up to 50 psi (3.5 bar)
- temperatures 50 - 100oF (10 - 38oC)
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