Samson 42-34 Mounting And Operating Instructions page 65

Type 2423 Valve, DN 65 to 100 · Balanced by a
diaphragm
p 1
Type 2424 Actuator
Type 42-34
Fig. 9-2: Functional diagram for regulators, DN 65 to 250 with balancing diaphragm
Legend for Fig. 9-1 and Fig. 9-2
1 Valve body
Flow set point
1.1 adjustment
(set point screw)
1.2 Lock nut
1.3 Cap
1.4 Restriction
2 Seat
3 Plug
4 Plug stem
5 Balancing bellows
EB 3013 EN
1.3
1.1
1.2
1
1.4
p 2
2
3
4
5.1
Type 2428 Actuator
Type 42-38
5.1 Balancing diaphragm
7 Spring
Screw plug (balanced
8 by a bellows, DN 125
and larger)
Low-pressure control
9
line (up to DN 100)
Low-pressure connec-
9.1 tion (DN 125 and
larger)
Connecting piece (up
10
to DN 100)
Type 2423 Valve, DN 125 to 250 · Balanced by a
diaphragm
1
p
1
2
3
5.1
Type 2424 Actuator
Type 42-34
11 Coupling nut
12.1 Diaphragm stem
12.2 Diaphragm stem
13 Operating diaphragm
Top diaphragm case
14.1
(valve on top)
Bottom diaphragm
14.2
case (valve on top)
15 Nuts and bolts
16 Set point springs
Servicing
1.3
1.1
1.2
1.4
p
2
4
Type 2428 Actuator
Type 42-38
Set point adjustment
for differential
17
pressure (set point
adjuster)
18 Nut
19 Diaphragm plate
20 Force limiter
Internal excess
21
pressure valve
22 Blanking plug at side
24 Diaphragm stem
9-5