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Overview

Major pressure loss (also called friction loss or major loss) is the pressure drop due to friction along the length of a straight pipe. It is calculated using the Darcy-Weisbach equation.

Formula

$\Delta P = f \cdot \frac{L}{D} \cdot \frac{\rho v^2}{2}$

Calculator

Notes

• Results are approximate and should be verified for critical applications
• Input values should be within reasonable engineering ranges

References

• Original Source