Samson 3374 - Page 19

EB 3018 EN 3-3
Design and principle of operation
20
4
3
p
5.1
16
6
14
18
7
15
11
12
17
p
2
1
19
21
Type2423 Valve
balanced by a diaphragm
Type2426 Actuator
Connection of an electric actuator
Fig.3-2: Functional diagram of regulator, DN65 to 250 with balancing diaphragm (without electric
actuator)
Legend for Fig.3-1 and Fig.3-2
3 Plug
4 Seat
5 Balancing bellows
5.1 Balancing diaphragm
6 Diaphragm stem
7 Plug stem
8
Vent plug (DN125 and
larger)
11 Coupling nut
12 Operating diaphragm
14 Differential pressure springs
15 Screws
16 Diaphragm plate
17 Nut
18 High-pressure control line
19 Control line connection
20 Valve body
21 Blanking plug