Data Sheet for Product

9 / 18
Siemens Electrothermal actuators STA..3.., STP..3.. CE1N4884en
Smart Infrastructure 2020-04-16
A higher sliding sleeve, bayonet nut, is used in the following cases:
a. If the diameter of the actuator's sliding sleeve, bayonet-ring (42,5 mm)
prevents assembly (e.g. angle valves, valves with measurement ports) and
b. To adapt to the desired thread size for third-party manufacturers (M28 x
1.5 or M30 x 1)
It must be used with insert A (black) if a higher sliding sleeve adapter (bayonet) is
used to maintain the close-dimension range.
Options
· To achieve the close-dimension range, reduced by 5 mm, the sliding
sleeve adapter must be used together with insert B (white).
· To achieve the close-dimension range, increased by 5 mm, the sliding
sleeve adapter must be used without insert A or B.
Expansion to the close-dimension is required to adapt to third-party valves that do
not operate within the standard close dimension range.
Close-dimension range with the different adapters:
Standard
bayonet-nut
Higher bayonet adapter
AV301 à M30 x 1,5
AV302 à M28 x 1,5
AV303 à M30 x 1
No insert
Insert-A
(black)
Insert-B
(white)
No insert
STA.. 8.5 … 13.5 8.5 … 13.5 3.5 … 8.5 13.5 … 18.5
STP.. 12.5 … 17.5 12.5 … 17.5 7.5 … 12.5 17.5 … 22.5
Adaption of close-
dimension with higher
sliding sleeve (bayonet-
nut) AV301, AV302 und
AV303, bayonet-
nut, AV..
(accessories)