Samson 3595, Монтаж и эксплуатация

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EB 8079 EN 3-3
Design and principle of operation
− Stem retracts (FE)
When the signal pressure is reduced or
the air supply fails, the springs move the
actuator stem upwards and open the
valve. The valve closes when the signal
pressure is increased enough to over -
come the force exerted by the springs.
The actuator's direction of action can be re -
versed, if required. Refer to the mounting
and operating instructions of the pneumatic
actuator:
u
EB 8310-X for Type 3271
3.2 Versions
Actuators
In these instructions, the preferable combina-
tion with a SAMSON Type 3276 or
Type 3271 Pneumatic Actuator is described.
The pneumatic actuator (with or without
handwheel) 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.
Tip
Note
Legend for Fig. 3-1
1 Valve body
2 Plug stem
3 Valve bonnet
4 Body nut
5 Stud bolt (valve body)
6 Screw (yoke)
7 Packing gland
8 Yoke
9 Actuator connection assembly
10 Actuator
11 Actuator stem
12 Travel indicator scale
13 Nut (packing gland)
14 Stud bolt (packing gland)
15 Packing follower
16 Packing rings
17 Guide bushing
18 Gasket (valve body)
19 Gasket (valve bonnet)
20 Cage
21 Gasket (cage)
22 Plug
23 Cage
24 Seat ring
25 Gasket (seat ring)