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Table 3-2: Materials · Material number according to DIN EN
Type 3274 Electrohydraulic Actuator
Housing, housing cover
Cylinder
Piston
Piston stem
Actuator stem
Hydraulic oil
Type 3374 Electric Actuator
Enclosure and cover
Central attachment and yoke
Actuator stem
DN 15, 25, 40 and 50 only
1)
Optionally with soft seal with standard K
2)
Special version 1.4409
3)
Table 3-3: K
coefficients, x
VS
missible differential pressures (valve balanced by a bellows)
Type 2423 E Valve balanced by a bellows
Valve size
Valve travel
K
coefficient
VS
x
value
FZ
Max. permissible differential
pressure ∆p
Flow rate set point ranges for water in m³/h
∆p
restriction
0.2 bar
Differential
pressure of
∆p
restriction
0.5 bar
EB 3018 EN
Flange: aluminum, connecting thread M30x1.5 · Formed sheet: 1.4301H injected
coefficients
VS
values, flow rate set point ranges for water and max. per-
FZ
DN
15
20
25
10 mm
4
6.3
8
0.65
0.6
0.55
25 bar
0.5
0.5
0.8
=
to
to
to
2
3
3.5
0.8
1.2
=
0.8
to
to
to 3
4.5
5.3
Design and principle of operation
Die-cast aluminum
Hydraulic cylinder tube
Steel/NBR combination
C45, hard chrome-plated
1.4104
Special HLP, silicone-free
PPO with glass fiber reinforcement
into housing, 30 mm hole
1.4305
DN 65 to 100: 1.4006
4)
DN 65 to 100: 1.4104/1.4006
5)
DN 125 to 250 only
6)
32
40
50
65
16
20
32
50
0.45
0.4
20 bar
2 to
3 to
3 to
5 to
7
11
16
28
4.5
4.5
7.5
3 to
to
to
to
9.5
16
24
40
80
100
125
150
16 mm
22 mm
80
125
190
280
0.35
16 bar
12 bar
10
40
7 to
50 to
to
to
35
120
1)
63
80
10
15
60
75 to
to
to
to
180
55
90
120
200
250
420
500
0.3
10 bar
70
90
to
to
180
220
100
120
to
to
260
300
3-9
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