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EQUIVALENT PIPE LENGTH - METRES

Equivalent pipe length represents the resistance added by fittings and valves in a pipeline, expressed as the length of straight pipe that would cause the same pressure loss. Understanding these values is essential for accurate system design, ensuring that pumps and fluid handling equipment operate efficiently and deliver the required flow rate and pressure.

EQUIVALENT PIPE LENGTH – METRES

Fitting Type Pipe Run metres
25 40 50 80
Bend 90° radius = pipe diameter0.30.50.61
Bend 90° radius = 2× pipe diameter0.150.250.30.5
Knee-bend1.52.53.55
T-piece2347
Check valve8101525
Diaphragm valve1.2234.5
Gate valve0.30.50.71

Equivalent straight pipe lengths for fittings and valves in metres.

In food and process industries, every bend, valve, or junction increases friction losses. When designing hygienic or industrial pipelines, calculating total equivalent length helps determine correct pump sizing, motor power, and line diameter. This prevents underperforming systems, cavitation, and unnecessary energy consumption.

Different fittings contribute differently to pressure losses. For example, a 90° bend adds less resistance than a check valve, which can equal several metres of straight pipe. Selecting efficient valve types and minimizing sharp changes in direction improves overall system efficiency and reduces maintenance costs.

Accurate pressure loss estimation is especially important in long transfer lines and CIP circuits. Engineers use equivalent length data to optimize layouts, balance flow between branches, and maintain consistent velocity throughout the system. This approach supports hygienic design while maximizing the performance of pumps and flow control components.

By incorporating equivalent pipe length into design calculations, fluid handling systems can achieve reliable flow performance, reduced energy usage, and greater operational efficiency. These values serve as practical design references for engineers working in food, beverage, and industrial applications.

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DISCLAIMER: The information provided by AxFlow Holding AB ('we', 'us', or 'our') on https://www.axflow.com (site 'Site') is for general information purposes only.
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