Samson 3259, Перевод оригинальной инструкции

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EB 8059 EN 27
Mounting and start-up
5 Mounting and start-up
SAMSON valves are delivered ready for
use. In special cases, the valve and actuator
are delivered separately and must be assem-
bled on site. Proceed as follows to mount
and start up the valve.
Risk of valve damage due to excessively high
or low tightening torques.
Observe the specified torques on tightening
control valve components. Excessively tight
-
ened torques lead to parts wearing out
quicker. Parts that are too loose may cause
leakage.
Observe the specified tightening torques
(
u
AB 0100).
Risk of valve damage due to the use of un -
suitable tools.
Only use tools approved by SAMSON
(
u
AB 0100).
5.1 Mounting the actuator onto
the valve
Proceed as described in the actuator docu -
mentation if the valve and actuator have not
been assembled by SAMSON.
Versions with V-port plug
Each V-port plug has three V-shaped ports.
Depending on the valve size, the size of the
symmetrically arranged V-shaped ports var-
ies. The process medium in the valve flows
through the V-shaped ports as soon as the
plug is lifted out of the seat (i.e. the valve
opens).
1.
Before mounting the actuator, determine
which V-shaped port is uncovered first
when the plug is lifted out of the seat.
Usually, this is the largest V‑shaped port.
2. On mounting the actuator, make sure
that the V-shaped port uncovered first
faces toward the valve outlet.
Medium flow obstructed due to incorrect in -
stallation of the V‑port plug.
To achieve the best flow conditions inside the
valve, the V‑port plug must always be in
-
stalled with the largest port facing toward
the valve outlet.
Make sure the V‑port plug is installed
correctly.
−
Remove the mounted actuator before
mounting the other actuator (see associat
-
ed actuator documentation).
−
Preloading the actuator springs increases
the thrust of a pneumatic actuator and re
-
duces the travel range of the actuator (see
associated actuator documentation).
NOTICE
!
NOTICE
!
Tip
NOTICE !
Note