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Engineering ToolBox > Online Fluid Flow Calculator

Water and water-glycol friction loss calculator for copper and steel pipes

An online frition loss calculator for straight piping handling water and water with varying percentages of ethylene glycol.

The calculator is based on the Darcy-Weisbach equation, the Colebrook equation, and the Moody equation. The program is intended for use only on straight piping. The program does not include pressure losses due to elevation differences, or flow through fittings.

Input values

• fluid type
• fluid temperature
• flow rate
• pipe size
• pipe length
• pipe material

Output values

• velocity
• Reynolds number
• Moody friction factor
• pipe friction factor (from the Colebrook equation)
• pipe head loss,
• pipe friction loss in psi

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