12
EB 8140 EN
Design and principle of operation
Table 2:
Materials
Valve body
Cast iron EN-GJL-250 (EN-JL1040)
Intermediate piece
1.0566
Actuator stem
1.4571
Flat plug
1.4571
Seal
PTFE, 35 % carbon fiber reinforced
Packing
PTFE/carbon, spring-loaded
Actuator
30/60 cm²
120 cm²
Actuator cover
PA 66, glass fiber reinforced
Aluminum
Piston
PA 66, glass fiber reinforced
Aluminum
Actuator base
Spheroidal graphite iron
EN-GJS-400-18-LT (EN-JS1049)
Aluminum
Table 3:
Nominal sizes, valve coefficients and seat diameters
Nominal size
DN
15
20
25
32
40
50
65
80
Flow coefficient
K
VS
6
9
18
20
36
44
65
90
Seat Ø
mm
20
20
24
48
48
48
74
74
Travel
mm
15
15
15
15
15
15
15
15
3.3 Dimensions and weights
Version with flanges
Nominal size
DN
15
20
25
32
40
50
65
80
Face-to-face dimension L
mm 130
150
160
180
200
230
290
310
Height including actuator H mm 235
235
249
249
262
262
368
368
Flange Ød
mm
95
105
115
140
150
165
185
200
Valve weight including
actuator
kg
5.4
6.0
7.3
12.3
13.0
15.7
30.5
33.5
Pneumatic piston actuator
Version
Actuator area
(piston Ø)
30 cm²
(Ø = 63 mm)
60 cm² (Ø = 90 mm)
120 cm²
(Ø = 125 mm)
1 spring
2 springs
Housing ØD
mm
100
127
180
Signal pressure connection
G ¼
G ¼
G ¼
