Samson 3214 - Page 15

EB 5868-1 EN 3-3
Design and principle of operation
3.2 Versions
Electric actuators
The Type3374 and TypeSAM Electric Actu-
ators are controlled using a three-step signal
as standard.
The Type3374 and TypeSAM Actuators can
also be controlled in the versions with posi-
tioner by a 0/4 to 20mA or 0/2 to 10V
signal. Various electrical accessories can be
optionally installed.
Types3374-21 and 3374-27 Actuators are
able to perform a fail-safe action (see sec-
tion Table 3-1).
Testing according to DINEN14597
The Type3374-21 and Type3374-
27 with "actuator stem extends" fail-
safe action are in conjunction with
the Type3214 Valves tested by the German
technical surveillance association TÜV
according to DINEN14597.
The registration number is available on re-
quest.
Table 3-1: Available versions and possible combinations (Type3214 Valve/actuator)
Valve size
Actuator Type 65 80 100 125 150 200 250 300
Without fail-safe action
3374-10 – – – • • • • –
3374-11 • • • – – – – –
SAM-32 – – – – – – – •
With fail-safe action
3374-27 – – – • • • • –
3374-21 • • • – – – – –
3376
2)
– – – – – – – •
1)
The rod-type yoke (1400-8822) is additionally required to connect Type3374-27 Actuators.
2)
Product in preparation