Flow coefficient and expansion factor are taken for
diameters in the range 50 to 500 or 1000mm from
DIN 1952.
It is also possible to make use of the following
formula
------, .........:.- 1 'V =k..Jt,p )
..---~----~-
_ - litre-
With the constant k = 231 h =jmb?r for noz~~~ //
-_-titre _
and k= 293h"'lmbar for~e ~--