■ 10Ω Series

Proportional Electro-Hydraulic Flow Control (and Check) Valves
Since the preselected flow rate continuously varies in proportion to thecurrent input to the valve, the system flow rate can be remote-controlled as
desired by regulating the current output from the amplifier. Further, since thepressure and temperature compensation functions are provided, thepreselected flow rate is not be affected by pressure (load) or temperature(fluid viscosity). This valve is ideal for use where actuator startup, stop, andspeed changes are to be implemented without producing a shock. Note that
this valve is used in conjunction with the applicable power amplifier.

■ Specifications
Model Numbers

Descriptions
Max. Operating Pressure

MPa

Metered Flow Adj. Range

L/min

EFG -03- 60
EFCG
125

EFG -06-250
EFCG

20.6

24.5

Min. Differential Pressure★1MPa

60: 1-60
125: 1-125
1.0Free Flow (EFCG Models Only)

L/min

130

280

Min. Pilot Pressure★2

1.0

1.0

1.5

at Normal

0.5

1at Transition

2.6

4

Rated Current

mA

780

820

Coil ResistanceΩ1010Hysteresis

3% or less

3% or lessRepeatability

1% or less

1% or less1025

Min. Pilot

L/min

MPa

2.5-250

Approx. Masskg

Graphic Symbols
Internal Pilot★1. ‌Min. pressure difference required between inlet and outlet ports to maintain function aspressure compensator.
★2. ‌The minimum required value for the external pilot type.

■ Model Number Designation
EFC

G-03

Series Number

Type of Mounting

Valve Size

Max. Metered Flow
L/min03

60
125

EF:
Proportional ElectroHydraulic Flow Control
Valve
EFC:
Proportional ElectroHydraulic Flow Control
and Check ValveH-128-125

G:
Sub-Plate
Mounting
03250

OM

OM

EFG-＊

EFG-＊

OM

OM

EFCG-＊EFCG-＊-E

Pilot
Connection

None:
Internal Pilot
E:
External Pilot

Series10Ω Series Flow Control (and Check) Valves

External Pilot-51
Design Number

51

51

SERIES■ Accessories● Mounting bolts
Valve ModelNumbers
EFG
-03
EFCG
EFG
-06
EFCG

Socket Head Cap Screw

Qty.

M10 × 80 L

4

M16 × 130 L

4● Applicable Power Amplifiers
For stable performance, it is recommended that Yuken's applicable power amplifiers be used (for details see page H-173, H-177
and H-183).
Model Numbers : AME-D-10-＊-20 AMN-D-10 (For DC power supply)
SK1022-＊-＊-11AME-D2-1010-11 SK1015-11 (For DC power supply)■ Sub-Plate
Valve ModelNumbers

Sub-Plate Model Numbers

Thread Size
RcApprox. Mass
kg

15.6

EFG
-03
EFCG

EFGM-03Y-30

EFG-06EFCG

EFGM-06X-30

112.5

EFGM-06Y-30

1-1/4

16

EFGM-03Z-30

3/4

5.7

● ‌Sub-plates are available. Specify the sub-plate model number from the tabel above. When sub-ptates are not used, the mounting surface shouldhave a good machined finish. 1.6■ Instructions[Example of Circuit]● Drain Back Pressure
Check that the drain back pressure dose not exceed 0.2 MPa.

21P.P.

P.P.
OM

EFCG-03
06

OM

03
EFCG- 06-E-51
ABPTa-E-51

b3

4P.P.
OM

EFG-03- -51
06

Series10Ω Series Flow Control (and Check) Valves

OM

EFG-

03
- -E-51
06

E Series
10Ω Series Flow Control (and Check) Valves● Pilot Type Selection
This valve is constructed so as to operate at a predeterminedpilot pressure. For the 03, a pilot pressure of 1 MPa or higher
is required. For the 06, the requied pilot pressure is 1.5 MPaor higher.
To obtain such a required pilot pressure, select the pilot typeaccording to the circuit examples on the right.
①/②
Use the external pilot type (pilot connection code: E)
whether a meter-in or meter-out circuit is employed.
③
Use the internal pilot type (pilot connection code: None)④
Use the external pilot type (pilot connection code: E)

H-129

EFG
-03
EFCG

Air Vent
3 Hex. Soc.
3 Places

3969.5

Locating Pins
6 Dia. 2 Places

ManualAdjustment
Screw
3 Hex. Soc. INC.

50.8
11.7

158.1

57.5

Outlet Port forControlled Flow or
Inlet Port for
Reversed FreeFlow

12561.8Drain Port

101.6

11.7

Connector
The direction canbe altered to every
90 degree angles.

Cable Departure
Cable Applicable: Outside Dia. … 8-10 mm
Conductor Area … Not Exceeding 0.75-1.5 mm2

11 Dia. Through17.5 Dia. Spotface
4 Places

Mounting Surface(O-Rings Furnished)
68

Inlet Port for Controlled
Flow or Outlet Port for
Reversed Free Flow

101.6
125

69

688

Pilot Port
235.5

EFG
-06
EFCG

Air Vent
3 Hex. Soc.
3 Places

1773
146

199.1

Locating Pins
16 Dia. 2 Places

57.5

69.5

174

ManualAdjustment
Screw
3 Hex. Soc.

180

H-130

133.4

104.8Drain Port

Outlet Port forControlled Flowor Inlet Port for
Reversed FreeFlow

3920.3Connector
The direction canbe altered to every
90 degree angles.

Cable Departure
Cable Applicable: Outside Dia. … 8-10 mm
Conductor Area … Not Exceeding 0.75-1.5 mm2

Inlet Port for Controlled Flowor Outlet Port for
Reversed Free Flow

Mounting Surface(O-Rings Furnished)
104

INC.

17.5 Dia. Through26 Dia. Spotface
4 Places
Pilot PortSeries
10Ω Series Flow Control (and Check) Valves105
120276.5

7SERIES■ Sub-Plate
EFGM-03Y, 03Z
125

102.475

6 Dia.
Rc 1/4 Thd. (From Rear)

47.8

11 Dia.

92.2

1192

11.1
22.2

28.6

Thread Size
"B" Thd.
Rc 3/4
Rc 1

Sub-PlateModel Numbers
EFGM-03Y-30
EFGM-03Z-30

14640

19168

2054

16.1

"B " Thd.
2 Places

101.6

20.6

14.2
81.5

M10 Thd. 18 Deep
4 Places
7 Dia. 8 Deep
2 Places

50.8

61.8

11 Dia. Through17.5 Dia. Spotface
4 Places

130

23 Dia.
2 Places

101.6

0.8

Rc 1/4 Thd.
(From Rear)

86.5

11.7

EFGM-06X, 06Y
180
17146

17 Dia.
10 Deep
2 Places

2-Rc“J”

144.5
108
104.8

17.5 Dia. Through26 Dia. Spotface
4 Places

M16 Thd. 3 Deep
4 Places

73
22.2

33
29 Dia.
2 PlacesB
147
196 Dia.

212
250

Sub-PlateModel Numbers
EFGM-06X-30
EFGM-06Y-30

E

H

F

11 Dia.
Rc 3/8 Thd.
(From Rear)

Rc 3/8 Thd.
(From Rear)

A

A

B

C

DE

F

H

J

55.2
52

137.8
132

14.3
19.3

101.1
91.3

35
40

45
60

34
39

1
1-1/4Series
10Ω Series Flow Control (and Check) Valves

E Series
10Ω Series Flow Control (and Check) Valves

136

133.4

85.7

104.8

D126

174

C

41.3

12.7

243.7

1.6H-131

■ Input Current vs. FlowEFG-03
EFCG

Viscosity: 30 mm2/s

250

100200EF G-03-12575

Flow Rate L/min

Flow Rate L/min

12550250100500200

400600

Input Current mA

800

010000EFG-03
EFCG

200200Flow Rate L/min

60 L /min

500.2s25150

125 L/min

1000.2s

50

Step Signal

0

Step Signal

0TimeTime■ Frequency Response
EFG
-03
EFCG

0.1

0-20-10-40-20-60-30-100

Frequency
2-120

0.10-30-120-140-160-180

0.40.7 122040704070

Hz
47 10Gain

Gain dB-20-60-80

0.2-10-4-1007 10

Flow Rate : 65 15 L /min
Supply Pressure : 13.7 MPa
Frequency-200

Hz4Phase-180

Phase deg.

0.7 1

Gain-160

H-132

0.4-80-140

EFG
-06
EFCG

0.2

Gain dB

Phase deg.

Viscosity: 30 mm2/s

800

250 L/min

250

100
75600

EFG-06EFCG

125 L /min

125

400

Input Current mA

300

150

Flow Rate L/min

Viscosity: 30 mm2/s

150

EF G-03-60■ Step Response

These characteristics have beenobtained by measuring on eachvalve. Therefore , they may vary
according to a hydraulic circuit
to be used.

EFG-06
EFCGPhase
Flow Rate : 125 25 L /min
Supply Pressure : 13.7 MPa

Series10Ω Series Flow Control (and Check) Valves

201000SERIES■ Viscosity vs. Flow

EFG
-03
EFCG

Oil: ISO VG 46

280125250110220Flow Rate L/min

Flow Rate L/min

140

EFG
-06
EFCG

756045155
12595

30

60

1530

00

Temperature 10
Viscosity 240

20120306840
445030Temperature 1070 ℃
15 mm2/s
Viscosity 240

60
21

Oil: ISO VG 46

2012030
6840
44503060
2170 ℃
15 mm2/s

1216■ Differential Pressure vs. Metered Flow
EFG
-06
EFCG

14012527025011023085140Flow Rate L/min

7055401201004020250100481216

Differential Pressure MPa

02048Differential Pressure MPa

20■ Interchangeability between Current and New Design● Specifications and Characteristics
Input current-flow characteristics differ between current and new design.
Please inquire separately for details.
Other specifications remain unchanged.
● Installation Interchangeability
There is an interchangeability in the mounting dimensions between current
and new design, however, note that because of improvements made on thesolenoids, the overall shapes and dimensions have been changed as shown
below.
Current : 50 Design
Air Vent
3 Hex. Soc. 3 Places
Adapter
22 HexManual Adjustment Screw
3 Hex. Soc.

Model Numbers(Current)(New)(Current)(New)

EF＊G-03-＊-＊-50
EF＊G-03-＊-＊-51
EF＊G-06-250-＊-50
EF＊G-06-250-＊-51

A

B

236.5
235.5
277.5
276.5

158.1
158.1
199.1
199.1

New : 51 Design

A
B

See EDG-01 (page H-98)
For details about the solenoid ass'yA
Manual Adjustment Screw
3 Hex. Soc.

Air Vent
3 Hex. Soc. 3 Places

Series10Ω Series Flow Control (and Check) Valves

BE Series
10Ω Series Flow Control (and Check) Valves

Flow Rate L/min

EFG
-03
EFCG

See EDG-01 (page H-98)
For details about the solenoid ass'y

H-133

■ List of Seals and Solenoid Ass'y
EFG
-03
EFCG
18 32 16

2 29 37 17 19

15 14 41 30 3126 496 42 5 13 1025 7 28 12 11 31 39 35

1340 34 27

831 38 33

21 22 36 24 23● List of Seals and Solenoid Ass'y
Item2532333435
3637383940

With Check Valve (EFCG-03)

Note) ‌The connector assembly GDM-211-B-11 (Item 26) is not included in thesolenoid assembly.

Name of Parts
Solenoid Ass'y
O-RingO-RingO-RingO-RingO-RingO-RingO-RingO-RingO-RingPart Numbers
Qty.
E318-Y06M1-28-61
1
OR NBR-90 G35-N
1
OR NBR-90 P28-N
1
OR NBR-90 P28-N
2
OR NBR-90 P26-N
1
OR NBR-90 P16-N
1
OR NBR-90 P14-N
1
OR NBR-90 P9-N
1
OR NBR-90 P6-N
2
AS568-016(NBR-70-1)
1

EFG-06EFCG
23 21 34 22 18 19 39 2032 42 46 49 30 38 1712 40 47 11 107947 40 123829AB

Detail of Section C-C1CC35

B

331613 44

145 44 34 24

31 43

241 36 15 37 14 38 41

With Check Valve (EFCG-06)
5684348 28

3927

Detail of "A"

26
1Section B-BNote) ‌The connector assembly GDM-211-B-11 (Item 32) is not included in thesolenoid assembly.

H-134● List of Seals and Solenoid Ass'y
Item
31
33
34
35
36
37
38
39
40
41

Name of Parts
Solenoid Ass'y
O-RingO-RingO-RingO-RingO-RingO-RingO-RingO-RingO-RingPart Numbers
E318-Y06M1-28-61
OR NBR-70-1 P21-N
OR NBR-90 P50-NOR NBR-90 P46-N
OR NBR-90 P36-N
OR NBR-90 P34-N
OR NBR-90 P32-N
OR NBR-70-1 P21-N
OR NBR-90 P10-N
OR NBR-90 P9-N

★Two o-rings are required for the EFCG.

Series10Ω Series Flow Control (and Check) Valves

Qty.
113
112
4
1★
23