5-6 EB 8048-2 EN
Installation
2
1
24
3
21
5.
36
40
34
Fig.5-3: Assembling Type3349 Valve and
Type3379 Actuator
5.3.2 Installing the valve into
the pipeline
Risk of valve damage due to work being
carried out by personnel not qualied for
such tasks.
The plant operator or specialist company
performing the welding is responsible for the
selection of the welding procedure and the
actual welding operations on the valve. This
also applies to any required heat treatment
to be performed on the valve.
Î Only allow qualied welding personnel
to carry out welding operations.
Premature wear and leakage due to insuf-
cient support or suspension.
Î Support or suspend the valve sufciently
at suitable points.
To meet 3-A conformity requirements, a gas-
ket recommended by 3-ASanitary Stan-
dards Inc. (see website
uhttp://www.3-a.org) must be used for a
Type3349 Valve with threaded ends accord-
ing to DIN11851/DIN11887.
1. Close the shut-off valves in the pipeline
at the inlet and outlet of the plant section
while the valve is being installed.
2. Prepare the relevant section of the pipe-
line for installing the valve.
NOTICE
!
NOTICE
!
Note