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The two diaphragms (4.1) provide a certain
amount of safety when one of the diaphragms
ruptures and prevents the process medium
and external pressure medium from mixing.
Type 2371-10
11
2
3
1
Valve body
2
Seat
3
Plug
Operating
4
diaphragm
4.1 Two diaphragms
Fig. 1: Functional drawings of the regulators
EB 2640 EN
15
12
p
c
4.1
p
1
5
Upper plug section
6
Adjustment screw
Adjustment opening
6.1
with blanking plug
7
Set point springs
7.1 Spring plate
Design and principle of operation
The screw (12) prevents parts from falling
apart inadvertently while the regulator is be-
ing dismantled.
Type 2371-11
6.1
6
8
p
15
2
5
9
1
2
3
8
Actuator housing
9
Clamp fitting
Test connection or
11
leakage line
connection
12 Locking screw
7
7.1
12
11
4
p
2
p
1
15 Mechanical stop
p
Input pressure
1
p
Output pressure
2
Set point pressure
p
(control pressure),
C
external
7
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