# Pumps and seals metric friction losses

## CALCULATING THE FRICTION LOSS IN METRIC SIZE PIPING

SOME NOTES FOR THE METRIC PIPE FRICTION CHART SHOWN BELOW

- The chart is calculated for fresh water at 15°C.
- Use actual bores rather than nominal pipe size.
- For stainless steel pipe multiply the numbers by 1.1.
- For steel pipe multiply the numbers by 1.3
- For cast iron pipe multiply the numbers by 1.7
- The losses are calculated for a fluid viscosity similar to fresh water

**THE FOLLOWING CHART WILL LET YOU CALCULATE THE LOSES THROUGH VARIOUS TYPE VALVES AND FITTINGS.**

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- On February 09, 2018