EB 8048-2/-3 EN
15
Design and principle of operation
3.2
Versions
Micro-flow valve
The Type 3349 Valve is also available as a
micro-flow valve.
With actuator
Valve size
DN
NPS
Type 3271/
3277
8 to 25
¼ to 1
Type 3379
8 to 25
¼ to 1
Actuators
In these instructions, the preferable combina-
tion with a Type 3271, Type 3277 or
Type 3379 Pneumatic Actuator is described.
The pneumatic actuator can be replaced by
another pneumatic actuator in a different
size, but with the same travel.
Î
Observe the maximum permissible actu-
ator force.
If the travel range of the actuator is larger
than the travel range of the valve, the spring
assembly in the actuator must be preloaded
so that the travel ranges match. See associ
-
ated actuator documentation.
Valve accessories
A Type 3724 Positioner is frequently used
when the Type 3349 Angle is combined with
a Type 3379 Pneumatic Actuator.
Note
42
19
19
19
23
15
15 Spring
19 Washer
23 V-ring packing
42 Snap ring
Fig. 5:
Detailed view of backup packing