Burkert Type 3236 - Manual (Page 22)

22
TechnicalData
Type 2035 / 3236
remarks
Static leak-tightness:
Valve is closed (diaphragm is in contact with the body seat). One
side of the body seat is under pressure. At the given pressure no
leakage takes place via the body seat.
Dynamic leak-tightness:
Valve is open and the medium is flowing through it. The downstream
flow is only slightly throttled by components placed downstream.
Both sides of the body seat are under pressure. The valve is closed
(CFA, NC via spring force; CFB, NO via pilot pressure). At the
given pressure the valve closes onto the body seat and the seal is
complete.
Static leak-tightness: Dynamic leak-tightness:
Fig. 21: Static and dynamic leak-tightness
Permitted medium pressure depending on the medium temperature
for plastic bodies.
0 20 40 60 80 100 120 140
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
PVDF
PP
Temperature [°C]
Medium pressure [bar]
3)
Fig. 22: Permitted medium pressure depending on the medium
temperature for plastic bodies.
3)
The given medium pressure applies for the static leak-tightness
value. For further information on this point see "Kv value".
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