Samson 3510, Монтаж и эксплуатация

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EB 8091-1 EN 25
Mounting and start-up
The workplace of operating personnel is the
location from which the valve, actuator and
any mounted valve accessories can be ac-
cessed to operate them.
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 setting up 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 32 °F (0 °C) and above
428 °F (220 °C).
Do not insulate valves mounted to comply
with NACE MR 0175 requirements.
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 as well as
explosive or hazardous substances, 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.
Valve accessories
A mounting kit is required to mount position-
ers, limit switches, solenoid valves or other
valve accessories. The mounting kit (item no.
1400-9031) can be ordered from
SAMSON. Refer to the mounting and oper-
ating instructions of the corresponding de-
vice for a description on how to mount it.
5.2.3 Installing the control
valve
Version with female thread or 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.
Note
WARNING !