Burkert 2301 - Flow Values and Characteristics

17
Technical data
7.5 Flow values and characteristics
7.5.1 Flow characteristic
Graphical presentation
T
hedetailedvaluesarelistedinthefollowingtables.
0
100
90
80
70
60
50
40
30
20
10
0
20
40 60 80
100
Stroke [%]
Cv/Cv
s
[%]
Fig. 8: Flow characteristic
Notes on the ow characteristic:
•
Linearconeforvalveseatsize3to6
• Coneofequalpercentforvalveseatsizes8to100(valveseat
size6optionalwithconeofequalpercent)
• FlowcharacteristicasperDINEN60534-2-4
• Theoreticalrangeability(K
VS
/K
VO
)foractuatorsize70,90,130:
 50:1forvalvesizes8to100
25:1forvalveseatsize6
10:1forvalvesizes3and4
• K
VR
valueat5%ofthestrokeforvalveseatsizes>10
K
VR
valueat10%ofthestrokeforvalveseatsizes≤10
 ( K
VR
value=lowestK
V
valueatwhichthetilttoleranceasper
DINEN60534-2-4isstillobserved)
• Actuatorsize70oersbettercontrolqualityoveractuator
size50,andisthuspreferable.
Type2301
English