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TYPE CODE
ACTUATOR CONSTRUCTIONS
MATERIALS
OTHERS
- Handwheel is not applicable for 'D' spring option (sign 4).
- Field reversible function is not available with H/W construction.
Pneumatic Diaphragm Actuator, Linear Type, Series VD
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
VD
R
25
E
020
A
E
A
K
X
X
A
X
R
1.
ACTUATOR SERIES
VD
Pneumatic Diaphragm actuator, Linear type
2.
FUNCTION CODE
Direction
Spring to
Air to Stem
D
Direct acting
Open
Extended
R
Reverse acting
Close
Retracted
3.
ACTUATOR SIZE
Outline Dimension
25
Ø255 mm
29
Ø295 mm
37
Ø375 mm
48
Ø486 mm
55
Ø566 mm
4.
SPRING RANGE
bar
psi
Supply Air Press.
E
0.8 - 2.6
11 - 37
3.2 bar / 44 psi
Optional Spring Range
D
1.5 - 3.4
21 - 48
3.9 bar / 55 psi
Y
Special
Special
Special
5.
STROKE
Desc.
VD_25
VD_29
VD_37
VD_48
VD_55
020
20 mm
STD
STD
STD
IQI
IQI
030
30 mm
N/A
STD
STD
IQI
IQI
040
40 mm
N/A
STD
STD
STD
STD
050
50 mm
N/A
N/A
STD
STD
STD
060
60 mm
N/A
N/A
N/A
STD
STD
070
60 mm
N/A
N/A
N/A
STD
STD
080
80 mm
N/A
N/A
N/A
N/A
STD
YYY
Special
Contact Metso for special stroke
6.
ACTUATOR CASE MATERIAL
A
JIS G3101-SS400 (ASTM A-36)
Y
Special
7.
DIAPHRAGM MATERIAL
Material
Description
E
EPDM
General material for -20 to 85 °C
S
Low temp. Silicone
Low temp material up to -53 °C
Y
Special
Other special material
8.
SEAL MATERIAL
Material
Description
A
Nitrile Rubber
General material for -20 to 85 °C
L
Low temp. NBR
Low temp material up to -40 °C
S
Low temp. Silicone
Low temp material up to -53 °C
Y
Special
Other special material
9.
BOLTING MATERIAL
K
Stainless steel
Y
Special
10.
POSITION LIMITATION
X
Not applicable
Optional Application
M
Mechanical Stopper
Y
Special
11.
EXTERNAL OVERRIDE OPTION
X
Not applicable
A
Side Handwheel mounted (applicable 25/29/37 sizes only)
T
Top-Side Handwheel mounted (applicable 48/55 sizes only)
Y
Special mounting side or Special H/W construction
12.
AIR SUPPLY CONNECTION
Connection Size
Actuator Size
A
1/4" NPT
VD_25/29/37/48/55
Y
Special
13.
OPTIONS
X
Not applicable
Y
Special
14.
MODEL CODE
R
Model R
Содержание VD Series
Страница 16: ...16 6 DA 70 en 8 EXPLODED VIEWS AND PARTS LIST VDD Direct Acting Air to Stem Extended ...
Страница 17: ...6 DA 70 en 17 VDR Reverse Acting Air to Stem Retracted ...
Страница 22: ...22 6 DA 70 en ...
Страница 23: ...6 DA 70 en 23 ...