User Manual

∆p
s
= Maximum permissible differential pressure at which the motorized valve will close securely
against the pressure (close off pressure)
Actuator Operating
voltage
Positioning Positioning
force
Data sheet
signal time
SU A21 /3
AC 230 V 3-wire on/off
(SPST
1)
)
10 s 170 N
A6V10446174
SSA31.04
AC 230 V
3-position or
SPDT
43 s 160 N N4860
SFA21/18
AC 230 V
2-position 10 s 200 N N4863
SFA71/18
AC 24 V
STA2 3..
AC 230 V
2-position
210 s
100 N
N4884
STA7 3..
AC 24V
2-position
270 s
100 N
N4884
STA6 3..
AC 24 V
DC 0…10 V
270 s
100 N
N4884
1)
SPST = single pole, single throw
4832Z01
Technical design / mechanical design
• Disc throttling element
• Seat ring embedded in through-port
• Seat machined into through-port and bypass
• Reservoir for continuous lubrication of sealing rings
• Return spring (to open position)
Sizing
Example:
100
= 0.27 l/s
∆p
v
100 = 9 kPa
k
vs
value required = 3.5 m
3
/h
Actuator overview
3 / 8
Siemens 2-port and 3-port zone valves, PN16 A6V10421629_en--_e
Building Technologies 2018-04-17