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Water Velocity through Piping

Water velocity through piping is the speed at which water moves within a pipe.

Key Points about Water Velocity through Piping

Erosion  -  High velocities can lead to pipe erosion over time.
Noise  -  Faster water flow can increase noise levels.
Pressure Drop  -  Higher velocities result in greater friction losses, leading to increased pressure drop along the length of the pipe.
System Design  -  Proper velocity ensures efficient operation of plumbing systems, balancing between flow requirements and minimizing wear and energy costs.

    

Water Velocity Through Piping formula

\( v_w \;=\;   \dfrac{ 4 \cdot Q_w }{  \pi \cdot d^2  } \) 
Symbol English Metric
\( v_w \) = water velocity \(ft\;/\;sec\) \(m\;/\;s\)
\( Q_w \) = water flow rate \(ft^3\;/\;sec\) \(m^3\;/\;s\)
\( \pi \) = Pi \(3.141 592 653 ...\) \(3.141 592 653 ...\)
\( d \) = pipe inside diameter \(in\) \(mm\)

   

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