VALVES AND ACTUATORS
29
VARIANTS: in case the MDL2./4.actuators are needed to be supplied with 1 KOhm auxiliary potentiometer,add PA2 for
MDL20,PA4 for MDL40 and PA6 for MDL60:e.g.MDL24PA2,MDL46PA4 or MDL66PA6. In special applications,the actua-
tors can be supplied with 2 or 3 auxiliary potentiometers.
Damper Actuators for Butterfly valves
Series MDL - Bidirectional motor- Input signal P.C. board - Power consumption 12VA -
2 output shafts: main and secondary shaft Ø 9.5 x 9.5 mm - MDL30-50 angular travel
set at 90°adjustable between 55 and 160°- MDL20-40-60 angular travel set at 90°ad-
justable between 0 and 160° - Force 500 N - Manual override - IP 55.
MODEL
TIMING
(s. FOR 90°)
TORQUE
Nm
ADJUSTABLE
ANGULAR
TRAVEL
SUPPLY
Vac
MAX
DAMPER
SURFACE m
2
ACTION
MDL22
15 - 27
6
0 to 160
230
1.2
on/off, floating
MDL24
45 - 80
20
0 to 160
230
4
“
MDL26
60 - 107
30
0 to 160
230
6
“
MDL42
15 - 27
6
0 to 160
24
1.2
“
MDL44
45 - 80
20
0 to 160
24
4
“
MDL46
60 - 107
30
0 to 160
24
6
“
MDL62
15 - 27
6
0 to 160
110
1.2
“
MDL64
45 - 80
20
0 to 160
110
4
“
MDL66
60 - 107
30
0 to 160
110
6
“
MDL32
15 - 27
6
55 to 160
24
1.2
proportional-potentio-
metric (165 Ohm)
MDL34
45 - 80
20
55 to 160
24
4
MDL36
60 - 107
30
55 to 160
24
6
MDL52
15 - 27
6
55 to 160
24
1.2
Vdc/current proportio-
nal control. Ranges: 6 to
9, 4 to 7, 8 to 11, 0 to 10,
1 to 5 Vdc, or current 4
to 20 mA
MDL54
45 - 80
20
55 to 160
24
4
MDL56
60 - 107
30
55 to 160
24
6
Options
MODEL
DESCRIPTION
MDLS5
Electronic card input signal, range 6 to 9, 4 to 7, 8 to 11, 1 to 5 V d.c., 4 to 20 mA for MDL32/34/36
MDLV5
Electronic card input signal, range 0 to 10 V d.c., 4 to 20 mA with adjustable start point and span
for MDL32/34/36
DMDL
Two auxiliary microswitches SPDT 10 (3) A - 240 V a.c.adjustable on the whole stroke for MDL
MDLA1
Damper drive linkage for MDL
MDLA2
Linkage for mounting MDL when replacing SL
MDLPA2 Board with 1 K Ohm auxiliary potentiometer for MDL2
MDLPA4 Board with 1 K Ohm auxiliary potentiometer for MDL4
MDLPA6 Board with 1 K Ohm auxiliary potentiometer for MDL6
YS7
Crank-arm in addition to MDLA1 composed of 2 joints and 8-mm rod for dampers with 10 to
18mm shaft with MDL actuator
Rotary Actuators
Actuators for Butterfly Valves
Series MDA - Bidirectional actuator for VFA butterfly valves, see page 28 - Floating
(MDA2.-4.) or proprotional 0-10 V (MDA5.) control signal - Angular stroke 90° - Man-
ual control - Supplied with linkage for mounting on valve body - Protection IP54.
MODEL
TIMING
s.
POWEER SUPPLY
Vca
TORQUE
Nm
OTHER CHARACTERISTICS
MDA22
90
230
20
For VFA valves up to DN100
MDA24
150
40
For VFA valves from DN125 to DN200
MDA42
90
24
20
For VFA valves up to DN100
MDA44
150
40
For VFA valves from DN125 to DN200
MDA52
90
20
For VFA valves up to DN100
MDA54
150
40
For VFA valves from DN125 to DN200
MDAV1
MDA actuators are supplied NOT mounted on valve bodies. In case the actuator-valve assembly is
required, order the specific part number MDAV1 together with the models of actuator and valve
body.
MDAV2 DMDA microswitch assembling on MDA actuator
