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