H
Direction Control Valves
H-8
DMA TYPE MANUALLY OPERATED
DIRECTIONAL VALVE
DMA Type Manual Valve
40 to 100
rr
/min
35MPa
Features
Specifications
q
The compact 01 and 03 sizes are per-
fect for small flow rate control.
w
Since a balanced type valve is used,
there is no need for drain piping, and
use with back pressures up to 16MPa
(163kgf/cm
2
) is possible.
e
Mounting methods are the same as SA-
G01/03, and the 01, 03 size modular
valve can be used, so circuit configura-
tion is quick and easy.
¡Handling
z
The following are the three types of lever oper-
ations.
q
Spring Offset Type (Type A)
The lever is normally kept in the end posi-
tion by the spring. Raising the lever per-
forms switching, and the lever returns to its
original position when released.
w
Spring Center Type (Type C)
The spool is normally in the center of posi-
tion 3. After switching to either end, the
spring returns the lever to its center position
when the lever is released.
e
Detent Type (Type F, Type E)
A notch at spool position 3 or position 2 acts
as a stop.
x
Pressure loss is the same as that for the SA-
G01/G03, so see SA-G01/G03 for more infor-
mation.
c
The lever mounting orientation can be posi-
tioned at 90° increments by changing the ori-
entation of the lever side cover.
v
For PT connection type DMA-G01/G03-*7*-
(J)20, closed cross DMA-G01/G03-*7X-(J)20 is
the standard type.
b
The relationship between the lever switching
positions and JIS symbols is shown below.
(See the installation dimension diagrams for
symbols
Ι
&
and
ΙΙ
&
.)
n
Mounting bolts are not included with the 01
size.
Model No.
Nominal
Diameter
(Size)
Maximum
Working Pressure
MPa{kgf/cm
2
}
Tank Port Back
Pressure
MPa{kgf/cm
2
}
Maximum
Flow Rate
r/min
Spool Stroke (mm)
Weight
kg
2-position 3-position
DMA-G01-***-20 1/8
35(25){357(255)} 16{163}
40 4
4 × 2
1.3
DMA-G03-***-(J)20 3/8 100 6
6 × 2
3.3
Positions Type JIS Symbol Model No.
Maximum
Working Pressure
MPa{kgf/cm
2
}
2-position
Closed Cross DMA-
G01
G03
-A3X-
20
(J)20
35{357}
Open Cross DMA-
G01
G03
-A3Z-
20
(J)20
Closed Cross DMA-
G01
G03
-E3X-
20
(J)20
Open Cross DMA-
G01
G03
-E3Z-
20
(J)20
3-position
All Ports Open
DMA-
G01
G03
-C4-
20
(J)20
DMA-
G01
G03
-F4-
20
(J)20
All Parts Blocked
DMA-
G01
G03
-C5-
20
(J)20
DMA-
G01
G03
-F5-
20
(J)20
ABT Connection
DMA-
G01
G03
-C6-
20
(J)20
DMA-
G01
G03
-F6-
20
(J)20
PT Connection
Closed
Cross
DMA-
G01
G03
-C7X-
20
(J)20
DMA-
G01
G03
-C7Y-
20
(J)20
25{255}
Restricted
Open Cross
Closed
Cross
DMA-
G01
G03
-F7X-
20
(J)20
DMA-
G01
G03
-F7Y-
20
(J)20
Restricted
Open Cross
PAT Connection
DMA-
G01
G03
-C8-
20
(J)20
35{357}
DMA-
G01
G03
-F8-
20
(J)20
DMA-G01-***-20
M5 × 45r
4
DMA-G03-***-J20
M6 × 70r
4
DMA-G03-***-20
M8 × 70r
4
Model No.
Pipe
Diameter
Maximum
Working Pressure
MPa{kgf/cm
2
}
Recommended
Flow Rate
(r/min)
Weight
(kg)
Applicable Valve Type
MSA-01Y-10 1/4
25{255}
40 1.2 DMA-G01-***-20
MSA-03-10 3/8 45
2.3 DMA-G03-***-J20
MSA-03X-10 1/2 80
MS-03-30 3/8 45
2.3 DMA-G03-***-20
MS-03X-30 1/2 80
These sub plates can also be used with SA (SS)-G01/G03, so see SA (SS)-G01/G03 for mounting methods.
Note)For mounting bolts, use 12T or equivalent.
m
The following shows the sub plates.
2-position 3-position
H Direction Control(P08-10).q 03.11.20 1:56 PM Page 8
H-9
H
Direction Control Valves
Understanding Model Numbers
Installation Dimension Drawings
20–X3A–01G–DMA
Nominal diameter 01, 03
Center valve position flow path 3, 4, 5, 6, 7, 8
Operation Method A: Spring offset type C: Spring center
E, F: Detent
Design number 20: 01 size and 03 size for M8 mounting bolt
J20: 03 size for M6 mounting bolt
Mounting method G: Gasket type
Manual valve (DMA type)
DMA-G01-***-20
Gasket Surface Dimensions
(
ISO 4401-03-02-0-94
)
JIS B8355 D-03-02-0-94
DMA-G01-***-20
Part No.
Part Name
13
14
15
16
17
18
19
20
21
22
23
Screw
Pin
Knob
O-ring
O-ring
O-ring
Backup ring
Snap ring
Guide
Ball
Retainer
Part No.
Part Name
1
2
3
4
5
6
7
8
9
10
11
12
Body
Cover A
Cover B
Spool
Ring
Bush
Lever
Spring
Rod cover
Nameplate
Stopper screw
Screw
DMA-G03-***-(J)20
Gasket Surface Dimensions
(
ISO 4401-05-04-0-94
)
JIS B8355 D-05-04-0-94
Cross-sectional Drawing
15
7
9
13
19 16 10 4 17 1 11 18 6 8
5
20
21 22 23
14
2
12
3
12
Note) 1.O-ring 1A/B-** refers to JIS B2401-1A/B.
2.Backup ring indicates JIS B2407-T2-**.
Seal Part List
Part
No.
Part Name
Model No.
DMA-G01 Q'ty DMA-G03 Q'ty
16 O-ring 1A-P7 2 1A-P10 2
17 O-ring
AS568-012 (Hs90)
4
AS568-014(Hs90)
5
18 O-ring
AS568-019 (Hs90)
2 1B-P28 2
19 Backup ring T2-P7 2 T2-P10 2
T
B
P
A
2-position
3-position
66
25.5
222
37.5
25
12.7
21.5
30.2
40.5
33
31.75
31
25.9
15.5
5.1
0.75
46
53
73 73
146
48
8
32.5
φ
φ
φ
P
B
T
T
A
2-position
3-position
69
93
10.3 10.3
23.8 23.8
54
36
252
30
46
9.516.6
1.6
L
69.5
91.5 104.5
196
46.5
68.5
φ
φ
8
φ
DMA-G03-**-J20 DMA-G03-**-20
φ
D
φ
6.8
φ
8.5
L 60.5 58
H Direction Control(P08-10).q 03.11.20 1:56 PM Page 9
