Data Sheet for Product
MXG461…U, MXF461…U Modulating Control Valves Technical Instructions
With Magnetic Actuators Document Number CA1N4455E-P25
October 19, 2020
Siemens Industry, Inc. Page 3
Manual Control
The valve control path (ports A → AB) can be opened
mechanically up to 90% of the full stroke by pressing the
handwheel inward and turning it clockwise (to the
MANUAL position). This disables the control signal from
the controller, and the green LED will flash.
To disable automatic control of the valve, press the
handwheel inward and turn it counterclockwise (to the
OFF position). The valve will close and the green LED
will flash
For automatic control, the handwheel must be set to the
AUTO position. The handwheel will spring out and the
green LED will be constantly lit.
Figure 3. Selecting
Automatic Control.
Sizing
Table 1. MX.461…U - Valves Sizing.
Product Numbers
Line
Size
C
V
P
max
Maximum
Close-off
Pressure
S
NA
1
P
med
1
I
N
1
Wire Gauge
18
16
14
12
(in)
(gpm)
(psi)
(bar)
(psi)
(VA)
(W)
(A)
Cable Length L (ft)
MXG461.15-0.6U
1/2
0.7
44
3
44
29
5
3.15
108
213
361
525
MXG461.15-1.5U
1/2
1.7
44
3
44
29
5
3.15
108
213
361
525
MXG461.15-3.0U
1/2
3.5
44
3
44
29
5
3.15
108
213
361
525
MXG461.20-5.0U
3/4
5.8
44
3
44
29
5
3.15
108
213
361
525
MXG461.25-8.0U
1
9.3
44
3
44
29
5
3.15
108
213
361
525
MXG461.32-12U
1-1/4
14.0
44
3
44
29
5
3.15
108
213
361
525
MXG461.40-20U
1-1/2
23.0
44
3
44
44
6
4.00
66
118
197
328
MXG461.50-30U
2
35.0
44
3
44
44
6
4.00
66
118
197
328
MXF461.65-50U
2-1/2
58.0
44
3
44
46
6
5.00
49
98
164
262
Key:
Pmax = Maximum permissible differential pressure across the valve’s control path,
valid for the entire actuating range of the motorized valve.
SNA = Nominal apparent power for selecting transformer
Pmed = Typical power consumption
IN = Required slow fuse
C
V
= Flow rate to IEC534-2-4
Control path A → AB (normally closed): Tolerance ±5%
Control path B → AB (normally open): Tolerance ±10%
L = Maximum cable length. With four-wire connections, the maximum
permissible length of the separate 16 AWG Cu (copper) signal cable is
656 feet. With three-wire connections, the maximum permissible cable
length is reduced to 1/3 of the values shown in the table.
1 = All data relates to a 24 Vac supply.