EB 2512 EN
17
Design and principle of operation
Table 1:
Technical data · All pressures in bar (gauge)
Valve
Type 2412
Valve size
DN 15 to 50
DN 65 to 80
DN 100
Nominal pressure
PN 16, 25 or 40
Max. permissible differential
pressure ∆p
25 bar
20 bar
16 bar
Max.
permissible
temperature
Valve
u
T 2500 ∙ Pressure-temperature diagram
Valve plug
Metal seal:
350 °C
· PTFE soft seal:
220 °C
EPDM or FKM soft seal:
150 °C
· NBR soft seal:
80 °C
Leakage class according to
IEC 60534-4
Metal seal: leakage class I (≤0.05 % of K
VS
coefficient)
Soft seal: leakage class IV (≤0.01 % of K
VS
coefficient)
Compliance
Diaphragm actuator
Type 2413
Actuator area
cm²
640
320
160
80
40
Set point ranges
bar 0.05 to 0.25
0.1 to 0.6
0.2 to 1.2
0.8 to 2.5
2)
2 to 5
4.5 to 10
8 to 16
Max. permissible
temperature
Gases
350 °C
, however, max.
80 °C
at the actuator · Liquids
150 °C
,
with compensation chamber
350 °C
· Steam with compensation
chamber
350 °C
Bellows actuator
Type 2413
Actuator area
cm²
33
62
Set point ranges
bar
10 to 22 · 20 to 28
2 to 6
1)
· 5 to 10 bar
Set point spring
8000 N
1)
Set point spring 4400 N
2)
Version with actuator with two diaphragms: 1 to 2.5 bar
