Samson 3277, Mounting And Operating Instructions

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EB 8310-5 EN 15
Design and principle of operation
More information is available in Data Sheet
u
T 8310-1.
Compliance
The Type 3271 and Type 3277 Pneumatic
Actuators bear the EAC mark of conformity.
Temperature range
The permissible temperature range depends
on the diaphragm material:
Diaphragm material Temperature range
NBR
1)
–31 to +194 °F
–35 to +90 °C
EPDM
2)
–58 to +248 °F
–50 to +120 °C
PVMQ
–76 to +194 °F
–60 to +90 °C
1)
In on/off service, lowest temperature restricted
to –4 °F (–20 °C).
2)
In on/off service, lowest temperature restricted
to –40 °F (–40 °C).
Supply pressure
The maximum permissible supply pressure is
6 bar in throttling service. See section 6.2
for restrictions in on/off service.
Accessories
The pneumatic actuators with 750 cm² actu-
ator area have a female thread on the top
diaphragm case to allow an eyebolt or swiv-
el lifting hook to be screwed into it. The eye-
bolt can be used to vertically lift the actuator
and is included in the scope of delivery. The
swivel lifting hook is designed for setting a
control valve assembly upright or for lifting
the actuator without valve. The swivel lifting
hook can be ordered (accessories).
Actuator
area
Item no.
Eyebolt
(DIN 580)
Swivel lifting
hook
750 cm² 8325-0131 8442-1017
Actuators with 175 cm² actuator area or
smaller do not require a female thread or
welded-on lifting eyelet due to their light
weight.
Note