Mounting The Device - Samson 3349 Mounting And Operating Instructions

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 (u AB 0100).
Components may loosen during trans-
port.

5.3 Mounting the device

The activities listed below are necessary to
install the valve and before it can be started
up.
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).
EB 8048-21 EN
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
(u AB 0100).
NOTICE
!
Risk of valve damage due to the use of
unsuitable tools.
Î Only use tools approved by SAMSON
(u AB 0100).
NOTICE
!
Risk of the process medium being
contaminated through the use of unsuitable
lubricants and/or contaminated tools and
components.
Î Keep the valve and the tools used free
from solvents and grease.
Î Make sure that only suitable lubricants
are used.
Î
Note
To meet 3-A conformity requirements, a
gasket recommended by 3-A Sanitary
Standards Inc. (see website
u http://www.3-a.org) must be used for a
Type 3349 Valve with threaded ends
according to DIN 11851/DIN 11887.
Installation
29