Burkert 2035 Manuel D'utilisation page 22

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:
Fig. 21: Static and dynamic leak-tightness
22
Dynamic leak-tightness:
english
Type 2035 / 3236
TechnicalData
Permitted medium pressure depending on the medium temperature
for plastic bodies.
8.0
7.0
6.0
5.0
4.0
PP
3.0
2.0
1.0
0.0
0 20 40
Fig. 22: Permitted medium pressure depending on the medium
temperature for plastic bodies.
The given medium pressure applies for the static leak-tightness
3)
value. For further information on this point see "Kv value".
PVDF
60 80 100 120
Temperature [°C]
140