Reference for determination of the meter size
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It´s possible to fill up with one meter size a wide range of dosing quantities in the same time.
The table below shows, which meter size is recommended.
It shows the dosing quantity in relationship to the velocity in the meter pipe :
The velocity of 1 m/sec is ideal for high product care, accuracy and wear. If the velocity is higher, then the pressure
shock increase if the valve is closing.. On the other hand, If the velocity is lower, then with several products
deposits are possible..
Utilization for plastic pipes
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It´s very important to know, that the dosing accuracy and the repeatablility are depending on the oscillation of the
product in the pipe. A product oscillation is possible, if plastic pipes are installed within the product line. If the valve
is closing, then the pressure increase and the plastic pipe works like a memory. If plastic pipes are required, then
they must be metallcoated. A spiral from metal for reinforcement the plastic pipe is not adequate to guarantee the
repeatability.
The length of the plastic pipe must be as short as possible. Are the pipes are longer then 1 m, then a mechanical
support must be for prevent pipe oscillations, if pressure shocks are existing.
DN
v = 0,5 m/s
v = 1 m/s
v = 2,5 m/s
10
40 ml/s
80 ml/s
200 ml/s
15
88 ml/s
176 ml/s
440 ml/s
20
157 ml/s
314 ml/s
785 ml/s
25
245 ml/s
490 ml/s
1225 ml/s
32
402 ml/s
804 ml/s
2010 ml/s
40
628 ml/s
1256 ml/s
3140 ml/s
