Samson EB 8111 EN, Mounting And Operating Instructions

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3-4 EB 8111/8112 EN
Design and principle of operation
Safety guard
For operating conditions that require in-
creased safety (e.g. in cases where the valve
is freely accessible to untrained staff), a safe-
ty guard must be installed to rule out a crush
hazard arising from moving parts (actuator
and plug stem). Plant operators are responsi-
ble for deciding whether a guard is to be
used. The decision is based on the risk posed
by the plant and its operating conditions.
Noise reduction
Trims with flow dividers can be used to re -
duce noise emission (
u
T 8081).
3.4 Valve accessories
Information Sheet
u
T 8350
3.5 Technical data
The nameplates on the valve and actuator
provide information on the control valve ver-
sion. See the 'Markings on the device' sec-
tion.
More information is available in Data Sheets
u
T 8111 and
u
T 8112.
Compliance
The Type 3321 Valve bears both the CE and
EAC marks of conformity.
Temperature range
Depending on the version, the control valve
is designed for a temperature range from
–10 to +220 °C (14 to 430 °F).
The use of an insulating section can extend
the temperature range to +300 °C (+572 °F)
depending on the properties of the materials
used.
Leakage class
Depending on the version, the following
leakage class applies:
Seal (12 on nameplate) ME,
ST
ME,
ST
PT, PK
Leakage class (according
to IEC 60534-4 or
ANSI/FCI 70-2)
Min.
IV
Min.
IV
VI
Noise emissions
SAMSON is unable to make general state-
ments about noise emissions. The noise emis-
sions depend on the valve version, plant fa-
cilities and process medium.
Dimensions and weights
The dimensions and weights for the DIN ver-
sions are listed in Table 3-1.
The dimensions and weights for the ANSI
versions are listed in Table 3-2.
Note