Samson 3286, Монтаж и эксплуатация

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EB 8257 EN 29
Mounting and start-up
Insulation
Only insulate control valves with insulating
section or bellows seal up to the bonnet
flange of the valve body for medium tem -
peratures below 0 °C (32 °F) and above
220 °C (428 °F).
Test connection
Versions with bellows seal fitted with a test
connection (G
1
/
8
) on the top bonnet allow
the sealing ability of the bellows to be moni-
tored.
Particularly for liquids and vapors, we rec -
ommend installing a suitable leakage indica-
tor (e.g. a contact pressure gauge, an outlet
to an open vessel or an inspection glass).
Risk of personal injury due to pressurized
components and process medium escaping
under pressure.
Do not loosen the screw of the test connec
-
tion while the valve is in operation.
Safety guard
To reduce the crush hazard arising from
moving parts (actuator and plug stem), a
safety guard can be installed.
Noise emission
A further noise reduction can only be
achieved by using additional insulation as
the steam conditioning valve is already
equipped with flow divider ST 3.
Valve accessories
If excessive heat is radiated by the steam
conditioning valve, only mount valve acces-
sories (e.g. positioners) on the inlet side of
the cooling water valve.
5.2.3 Installing the control
valve
Version with flanges
1. Close the shut-off valve in the pipeline
while the valve is being installed.
2. Remove the protective caps from the
valve ports before installing the valve.
3. Lift the valve using suitable lifting equip -
ment to the site of installation (see sec-
tion 4.2.2). Observe the flow direction
through the valve. The arrow on the
valve indicates the direction of flow.
4. Make sure that the correct flange gaskets
are used.
5. Bolt the pipe to the valve free of stress.
6. Connect the cooling water pipeline and
cooling water valve.
Version with welding ends
1. Proceed as described for Version with
flanges (steps 1 to 3).
2. Completely retract the actuator stem to
protect the plug from sparks during weld-
ing.
3. Weld the valve free of stress into the
pipeline.
4. Connect the cooling water pipeline and
cooling water valve.
WARNING !