l/d pipe diameter change calculator

enter the value and click "calculate", the calculation result will be displayed.

`K=f_T×(L/D) `
fT = turbulent friction coefficient
l = length
d = pipe diameter
k = k value

enter a value:

turbulent friction coefficient:
length:
m
pipe diameter:
mm

calculation result:

k value:
l/d changes with pipe diameter calculator

usage example
enter data:

turbulent friction coefficient: 45

length: 60m

pipe diameter: 10mm

click "calculate" to output data

k value: 270.000

things to note
this calculator calculates the l/d coefficient k value of the valve as the pipe diameter changes. the l/d coefficient is stored in the valve table for the pipe diameter range. valves that fall into this category include butterfly valves and swash plate check valves.
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