Siemens Electric Actuators For Butterfly Valves SQU83 - Manual (Page 3)

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Siemens Building Technologies Electric actuators for butterfly valves CM1N4506en
HVAC Products 07.06.2004
Equipment combinations
The table below shows which actuators may be used with which slipper valves and
butterfly valves, and indicates the appropriate mounting kits in each case.
Actuators
Valves PN class Data
sheet
SQK33.00 SQL33.00
SQL83.00 SQL33.03 Mounting
kits
Nominal size (DN)
Three-port slipper valves
(Mixing)
VBF21... (40 ... 50) PN6 N4241 40 / 50 40 / 50 40 / 50 ASK32
(65 ...150) PN6 N4241 --- 65 ...150 65 ...150 ASK31
VBI31... (¾”...1½”) PN10 N4232 ¾”...1½” ¾”...1½” ¾”...1½” ASK32
VBG31... (¾”...1½”) PN10 N4233 ¾”...1½” ¾”...1½” ¾”...1½” ASK32
Other
makes PN6... --- ¾”...1½” ¾”... 2" ¾”... 2" ASK40 *)
ASK41 *)
Four-port valves
(Mixing)
VCI31... (¾”...1½”) PN10 N4252 ¾”...1½” ¾”...1½” ¾”...1½” ASK32
Other
makes PN6... --- ¾”...1½” ¾”... ¾”... 2" ASK40 *)
ASK41 *)
Butterfly valves
K1i... (¾”...1¼”) PN6 N4111 ¾”...1¼” ¾”...1¼” --- ASK33
VKF41... (40 ... 200) PN16 N4131 40 40 ... 200 40 ... 200 ASK33
*) Mounting kits ASK40 and ASK41 for non-Siemens actuators: refer to data sheet N42291
Mechanical design
The electric actuators require no maintenance. They have a reversible synchronous
motor and reduction gears with self-lubricating sinter bearings. The housing base and
the console are die-cast aluminium, and the cover is plastic.
"AUTO" and "MANUAL" modes can be selected with a rotary switch on the housing
base. When the switch is set to "MANUAL", the actuator and valve can be operated
with a manual lever. For manual operation, the angle of rotation is mechanically limited
by an end-stop.
The actuators supplied have a 90° angle of rotation suitable for the Siemens valves.
During automatic operation, rotation is limited by two built-in end-switches. For non-
Siemens valves, the angle of rotation in the range 70° to 180° can be selected by
repositioning the switching cams.
The direction of operation of the actuator can be reversed (refer to "Commissioning").
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