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1.2.4 Wetted materials
Dosing head
Valve seat / valve housing / connector section
Seals
Ball
Diaphragm
1.4435
1.4435
EPDM *
Al
2
O
3
PTFE
* O-ring DIN 11864 R
1.2.5 Performance diagrams, Sigma 2 with hygienic pump head
p [bar]
S [%]
C [l/h]
C [l/h]
S2Ba Hygien.
A
B
0
50
100
150
200
250
300
350
400
450
0
2
4
6
04350
07220
07120
16130
16090
16050
12
10
8
0
50
100
150
200
250
300
350
400
450
80
60
40
20
0
100
120
04350
07220
07120
16130
16090
16050
Fig. 6: A) Dosing rate C at maximum back pressure dependent on the
stroke length s. B) Dosing rate C dependent on the back pressure p.
Sigma 2 S2Ba with hygienic pump head
(50 Hz)
Product-specific part
10