Samson 3730-4 - Connections; Pneumatic Connections

48 EB 8384-4 EN
Attachment to the control valve – Mounting parts and accessories
Attachment according to IEC60534-6
(NAMUR rib or attachment to rod-type
yokes) and to rotary actuators
The positioner requires an additional port for
the exhaust air that can be connected over
piping. An adapter available as an accesso-
ry is used for this purpose:
Threaded bushing
(M20x1.5)
G¼
¼NPT
0310-2619
0310-2550
The adapter uses one of the M20x1.5 con-
nections in the housing which means only
one cable gland can be installed.
Should other valve accessories be used
which vent the actuator (e.g. solenoid valve,
volume booster, quick exhaust valve), this ex-
haust air must also be included in the purg-
ing function. The connection over the adapt-
er at the positioner must be protected with a
check valve (e.g. check valve G¼, order no.
8502-0597) mounted in the piping. Other-
wise the pressure in the positioner housing
would rise above the ambient pressure and
damage the positioner when the exhausting
components respond suddenly.
Note
4.11 Required mounting parts and accessories
Table1: Direct attachment to Type 3277-5 Actuator (Fig.3)
Order no.
Mounting parts
Standard version for actuators 120cm² or smaller 1400-7452
Version compatible with paint for actuators 120cm² or smaller 1402-0940
Accessories for
actuator
Old switchover plate for Type 3277-5xxxxxx.00 Actuator (old) 1400-6819
New switchover plate for Type 3277-5xxxxxx.01 Actuator (new)
1)
1400-6822
New connecting plate for Type 3277-5xxxxxx.01 Actuator (new)
1)
, G
1
/
8
and
1
/
8
NPT
1400-6823
Old connecting plate for Type 3277-5xxxxxx.00 Actuator (old): G
1
/
8
1400-6820
Old connecting plate for Type 3277-5xxxxxx.00 (old):
1
/
8
NPT 1400-6821
Accessories for
positioner
Connecting plate (6)
G
¼
1400-7461
¼
NPT 1400-7462
Pressure gauge bracket (7)
G
¼
1400-7458
¼
NPT 1400-7459
Pressure gauge mounting kit (8) up to max. 6 bar (output/
supply)
Stainless steel/
brass
1402-0938
Stainless steel/
stainless steel
1402-0939
1)
Only new switchover and connecting plates can be used with new actuators (Index 01). Old and new plates are
not interchangeable.