Samson 3259, Перевод оригинальной инструкции

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EB 8059 EN 29
Mounting and start-up
5.2.2 Additional fittings
Strainers
We recommend installing a SAMSON
strainer upstream of the valve. It prevents sol-
id particles in the process medium from
damaging the valve.
Bypass and shut-off valves
We recommend installing a shut-off valve
both upstream of the strainer and down-
stream of the valve and installing a bypass
line. The bypass ensures that the plant does
not need to be shut down for service and re-
pair work on the valve.
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 or above 220 °C.
Test connection
Versions with bellows seal fitted with a test
connection (G
1
/
8
) at the top flange 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.
5.2.3 Installing the control
valve
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. Depending on the field of application,
allow the valve to cool down or heat up
to reach ambient temperature before
start up.
7. Slowly open the shut-off valve in the
pipeline after the valve has been in-
stalled.
Risk of valve damage due to a sudden pres -
sure increase and resulting high flow veloci -
ties.
Slowly open the shut‑off valve in the pipeline
during start‑up.
WARNING !
NOTICE
!