Mounting The Device; Mounting The Actuator Onto The Valve - Samson 3522 Mounting And Operating Instructions

Installation
Proceed as follows:
Î Lay out the necessary material and tools
to have them ready during installation
work.
Î Flush the pipelines.
Note
The plant operator is responsible for clean-
ing the pipelines in the plant.
Î For steam applications, dry the pipelines.
Moisture will damage the inside of the
valve.
Î Check any mounted pressure gauges to
make sure they function properly.
Î When the valve and actuator are al-
ready assembled, check the tightening
torques of the bolted joints. Components
may loosen during transport.

5.3 Mounting the device

The activities listed below are necessary to
install the valve and before it can be started
up.
NOTICE
!
Risk of valve damage due to excessively
high or low tightening torques.
Observe the specified torques when tighten-
ing control valve components. Excessive
tightening torques lead to parts wearing out
more quickly. Parts that are too loose may
cause leakage.
Î Observe the specified tightening torques
(see section 15.1).
28
NOTICE
!
Risk of valve damage due to the use of un-
suitable tools.
Î Only use tools approved by SAMSON
(see section 15.1).
5.3.1 Mounting the actuator
onto the valve
WARNING
!
Risk of personal injury due to preloaded
springs.
Actuators with preloaded springs are under
tension. They can be identified by the long
bolts protruding from the bottom of the actu-
ator.
Î Before starting any work on the actuator,
relieve the compression from the pre-
loaded springs (see associated actuator
documentation).
Depending on the version, SAMSON control
valves are either delivered with the actuator
already mounted on the valve or the valve
and actuator are delivered separately. When
delivered separately, the valve and actuator
must be assembled together on site.
Versions with V-port plug
To achieve the best flow conditions inside the
valve, the V-port plug must always be in-
stalled with the port that releases the flow
first when the valve opens facing toward the
valve outlet. This is the largest of the three
V-shaped ports (see Fig. 4).
EB 8822 EN