Example: which
valve is needed to get 0,06 m3/h water flow with free
exhaust and pressure drop of 5,5 mH2O?
Solution: consulting the chart, start from p = 5,5 on the
abscissa and Q = 0,06 on the ordinate, the point of intersection is on
the line Kv = 0,08. Thus, the valve must have a Kv = 0,08.
Q =
flow rate in m3/h Dp = pressure drop in mH2O Kv = flow factor