Modular Valves
D
D-50
Counter Balance
Modular Valve
40 to 300
rr
/min
14MPa
Features
q
This modular valve is used to control
actuator back pressure and for other
pressure control valve applications.
w
Pressure adjustment is possible across
a wide range, from 0.25 to 14MPa {2.5
to 143kgf/cm
2
}.
e
Maximum Operating Pressure: 25,
35MPa {255, 357kgf/cm
2
}
Specifications
Model No.
Nominal
Diameter
(Size)
Maximum Working
Pressure
MPa{kgf/cm
2
}
Maximum Flow
Rate
r/min
Pressure Adjustment
Range
MPa{kgf/cm
2
}
Weight
kg
Gasket Surface
Dimensions
OCQ-G01-A11-20
A12
1/8 25{255} 40
0.8 to 7{ 8.2 to 71.4}
3.5 to 14{35.7 to 143}
1.1
ISO 4401-03-02-0-94
OCQ-G01-B11-20
B12
0.8 to 7{ 8.2 to 71.4}
3.5 to 14{35.7 to 143}
1.1
OCQ-G03-A1A-J50
A1C
A1E
3/8 25{255} 80
0.25 to 0.85{ 2.5 to 8.7}
0.85 to 3.5{ 8.7 to 35.7}
3.5 to 14{35.7 to 143}
3.5
ISO 4401-05-04-0-94
OCQ-G03-B1A-J50
B1C
B1E
0.25 to 0.85{ 2.5 to 8.7}
0.85 to 3.5{ 8.7 to 35.7}
3.5 to 14{35.7 to 143}
3.5
OQH-G04-A1A-10
A1C
A1E
1/2 35{357} 300
0.25 to 0.85{ 2.5 to 8.7}
0.5 to 3.5{ 5.1 to 35.7}
2.0 to 14{20.4 to 143}
8.0
ISO 4401-07-06-0-94
OQH-G04-B1A-10
B1C
B1E
0.25 to 0.85{ 2.5 to 8.7}
0.5 to 3.5{ 5.1 to 35.7}
2.0 to 14{20.4 to 143}
8.0
zThe pressure adjustment range is
expressed in terms of cracking
pressure.
xRun tank port piping directly to the
tank, and ensure that back pres-
sure is as small as possible.
cNote that a sub plate and installa-
tion bolts are not included. See
pages D-90 through D-95 if these
items are required.
v04 series modular valves do not
have an L (DR
2) drain port, so they
cannot be used in combination with
pressure center type solenoid
valves (D).
J50–(K)–A1B–03G–OCQ
Pressure adjustment range
Type 1 Internal pilot
Internal drain
Control port A: A port
B: B port
Nominal diameter (size) 01, 03
Mounting method G: Gasket type
Counter balance modular valve
Design number
Note: For 03 size, relationship between mounting bolts and design number is
indicated as J50: M6, 50 : M8.
Auxiliary symbol K: With handle (01, 03 size)
Understanding Model Numbers
01, 03 size
¡Handling
COUNTER BALANCE MODULAR VALVE
D
D-51
Modular Valves
10–A1B–04G–OQH
Pressure adjustment range A, C, E
Control port A: A port
B: B port
Nominal diameter (size) 04
Mounting method G: Gasket type
M35 Series counter balance modular valve
Design number
Type 1 Internal pilot
Internal drain
Understanding Model Numbers
04 size
Installation Dimension Drawings
Note) Pressure is increased by clockwise (rightward) rotation of the
adjusting screw (bolt), and decreased by counterclockwise (left-
ward) rotation.
T
P
A
B
5
174 max.
90 max.
40.5
18.5
17
80
50 max.
147 max.
32.5
23
31 7.5
46
20
40
T
P
A
B
40
20
147 max.
50 max. 80
17
90 max.
174 max.
5
23
32.5
31 7.5
46
18.5
40.5
OCQ-G01-A1*-20 OCQ-G01-B1*-20
P
AB
TT
Adjusting stroke
Adjusting stroke
46
70
27.5
55
54
54
108
157.5 max.
237.5 max.
10
13
5
10
253 max.
P
AB
TT
Adjusting stroke
Adjusting stroke
70
27.5
46
55
54
54
108
157.5 max.
237.5 max.
10
13
5
10
253 max.
OCQ-G03-A1*-J50 OCQ-G03-B1*-J50
D
D-52
Modular Valves
BYA
XPT
Pressure gauge attachment port
G1/4
6
13
2- 3 pin
703
35
91
14.5
299.6 max.
45.5
87 141.6 35
193 max.
20
φ
OQH-G04-A1*-10
TP
X
AB Y
Pressure gauge attachment port
G1/4
55
194.6 max.
35 141.6 87
299.6 max.
45.5
91
14.5
35
70
3
2- 3 pin
13
6
φ
OQH-G04-B1*-10
020304010
17
7
8
9
10
14
15
16
{71.4}
{81.6}
{91.8}
{102}
{143}
{153}
{163}
{173}
Pressure
MPa {kgf/cm
2
}
Flow rate r/min
{10.2}
0
40 60 8020
1
3
4
5
2
12
14
16
18
{20.4}
{30.6}
{40.8}
{51.0}
{122}
{143}
{163}
{184}
Pressure
MPa {kgf/cm
2
}
Flow rate r/min
Pressure
⎯
Flow Rate Characteristics
Performance Curves
Hydraulic Operating Fluid
Viscosity 32mm
2
/s
OCQ-G01-A1*-20 OCQ-G03-A1A-J50 OQH-G04-B1A-10
Pressure Loss Characteristics
OCQ-G01-
A1*
-20
B1*
Pressure Rise
Pressure Drop
OCQ-G03-A1*-J50
Pressure Rise
Pressure Drop
Pressure Rise
Pressure Drop
2
Pressure Loss
MPa {kgf/cm
2
}
{4.1}
{6.1}
{8.2}
{12.2}
{14.3}
{10.2}
Flow rate
02030
r/min
10 50
1.4
40
0.2
0.6
0.6
0.8
1.0
1.2
T
P
BA
PT B A
1
1
2
{2.0}
1.5
020
0.5
2.5
1.0
2.0
40 60 80 100 120
{5.1}
{10.2}
{15.3}
{20.4}
{25.5}
1
ABTP
AB
P
T
2
3
4
(Main valve fully open)
1
2
3
4
Pressure Loss
MPa {kgf/cm
2
}
Flow rate r/min
{10.2}
{25.5}
300250200150100
2.0
1.0
2.5
0.5
0
1.5 {15.3}
{5.1}
{20.4}
1
2
3
2
1
3
(Main valve fully open)
50
PTYXB A
PTYXB A
Pressure Loss
MPa {kgf/cm
2
}
Flow rate r/min
0
100
150
200
250
300
50
1
2
3
4
5
14
16
18
20
{10.2}
{10.2}
{10.2}
{10.2}
{10.2}
{143}
{163}
{184}
{204}
Pressure
MPa {kgf/cm
2
}
Flow rate r/min
OQH-G04-
A1
*-10
B1
