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6.3
11
12
26
Fig. 3-2: Functional diagram of regulator, DN 15 to 25
Legend for Fig. 3-1 and Fig. 3-2
1
Valve body
1.1 Connection nut with seal and
welding end
1.2 Restriction
2
Seat
3
Guide nipple with plug section
4
Plug stem
5
Set point spring
6
Actuator
6.1 Operating diaphragm unit
EB 3132-3 EN
1
2
6.2 Overload protection
6.3 Actuator cover
7
Housing screws
8
Pin of operating element
10 Coupling nut
11 Control line
12 Set point screw
13 Lock nut
14 Cap
20 Control thermostat
Design and principle of operation
6.2
7
6.1
6
3
1.1
1.2
10
8
24
22
25
21
23
20
21 Set point spring
Set point adjuster (tempera-
22
ture)
23 Operating bellows
24 Capillary tube
25 Temperature sensor with
packing
26 Lead-seal hole
3-3
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