SERIES■ ‌High Flow Series Proportional Electro-Hydraulic Flow Control andRelief Valves
This flow control and relief valve is an energy-saving valve that supplies theminimum pressure and flow necessary for actuator drive.
For the High Flow Series, double maximum flow rate [03 size: 125→250 L/min,
06 size: 250→500 L/min, 10 size: 500→1000 L/min] enables a smaller valve
size than conventional products; compact-sized devices can be provided.

■ Specifications
Model No. EFBG-03
EFBG-06
EFBG-10  -250-＊-＊-51   -500-＊-＊-51   -1000-＊-＊-51

Max. Operating Pressure

MPaMax. Flow

L/min

Metered Flow Adjustment RangeL/min
Min. Pilot Pressure

Flow Controls
Pressure Controls★124.524.52505001000

2.5-250

5-500

10-1000

1.5

1.5

1.5

at Normal

11

4.5

at Transition

46

10.0

Rated Current

mA

830

780

830

Coil ResistanceΩ

101010

Pilot Flow

L/min

Differential Pressure

MPa

24.5

MPa

Hysteresis
Repeatability

0.8

0.9

1.2

3% or less

3% or less

3% or less

1% or less

1% or less

1% or less

C: 1.6-15.7
H: 1.8-24.5
C: 850
H: 87010

C: 1.5-15.7
H: 1.5-24.5
C: 800
H: 90010

C: 1.1-15.7
H: 1.1-24.5
C: 900
H: 950
10Hysteresis

3% or less

3% or less

3% or lessRepeatability

1% or less

1% or less

1% or less★2Pres. Adj. Range

MPa

Rated Current

mA

Coil ResistanceΩApprox. Mass

kg

Refer to pages H-147 to H-149

Graphic Symbols
With Proportional Pilot Relief Valve
Internal Pilot

External Pilot

AYX★1. ‌The specifications for pressure controls are applied to models with proportional pilot reliefvalve. (Ex. EFBG-03-250-C-＊-51)★2. ‌The maximum pressure adjustment range of the valves without proportional pilot relief
valves is 24.5 MPa.

OM

OM
VTP

Without Proportional Pilot Relief Valve
Internal Pilot

External Pilot

AYX
OM

VO
M

TE Series
High Flow Series Flow Control and Relief Valves

Descriptions

PSeriesHigh Flow Series Flow Control and Relief Valves

H-145

■ Model Number Designation
EFB

GSeries Number

Type ofMounting

EFB:
Proportional ElectroHydraulic Flow
Control and Relief
Valve

G:
Sub-PlateMounting

-03

-250

Valve Size

Max. Metered Flow
L/min03

250

06500

101000-C

Proportional Pilot Relief
Valve Pressure Adj. Range
C, H:
See Specifications
None:
Without Proportional
Pilot Relief Valve-E-51

Pilot
Connection

DesignNumber

None:Internal Pilot

51

E:
External Pilot

51
51■ Accessories● Mounting Bolts
Valve Model Numbers

Socket Head Cap Screw

Qty.

EFBG-03

M12 × 120 L

4

EFBG-06

M16 × 120 L

4

EFBG-10

M20 × 150 L

4■ Applicable Power Amplifiers

For stable performance, it is recommended that Yuken's applicable power amplifiers be used (for details see pages H-173, H-177
and H-183).
Valve Model Numbers
EFBG-03- 250(-E)-51
EFBG-06- 500(-E)-51
EFBG-10-1000(-E)-51
03 125
EFBG-06- 500 -C(-E)-51
10 1000 H

Power Amplifier Model Numbers
For Flow Control

For Pres. Control

AME-D-10-＊-20
AMN-D-10 (For DC Power Supply)—AME-D2-1010-11■ Instructions● Drain Back Pressure
Check that the drain back pressure dose not exceed 0.2 MPa.
● When Relief Valve Passing Flow Rate is Low in Pressure Control StateTo avoid preselected pressure instability, use a passing flow rate of 15 L/min or higher.
Further, check that the tank-line back pressure dose not exceed 0.5 MPa.
● Safety Valve Pressure Setting
The pressure of the safety valve is preset at the value equal to the upper limit of the pressure adjustment range plus 2 MPa. Pleaseadjust the pressure of the valve so preset to meet the pressure to be used actually.
To lower the pressure setting, turn the safety valve pressure adjustment screw anti-clockwise. After adjustment, be sure to tighten
the lock nut.
● Interchangeability in Installation with Conventional Valves (10Ω-10Ω Series)
・EFBG-03
There is no interchangeability in installation.
・EFBG-06/10
A product in the high-flow series can be mounted on the conventional mounting surface but no conventional product can bemounted on the mounting surface of the high-flow series.

H-146SeriesHigh Flow Series Flow Control and Relief Valves

SERIESCEFBG-03-250 - (-E)-51, EFBG-03-250 (-E)-51
H
153

26.2

13.5 Dia. Through21 Dia. Spotface
4 Places

101.6

Tank Port " T"

Outlet Port " A"
A

14.2

VT
Y

139.5

103.3

45.8

X

101.6

130

Drain Port " Y"

11.7

26.8

Vent Port " V"P
Inlet Port "P"

Pilot Pressure Port " X"
11.7
Manual Flow Adj.Screw
3 Hex. Soc.
INC.

Cable Departure (For Flow Control)
Cable Applicable:
Outside Dia. … 8-10 mm
Conductor Area
… Not Exceeding 0.75-1.5 mm2Manual Pressure Adj.Screw
3 Hex. Soc.

85.8
125
Air Vent
3 Hex. Soc.
3 Places

Pressure Adj. Srerw
for Safety Valve
3 Hex Soc.
INC.

Cable Departure (For Pressure Control)
Cable Applicable:
Outside Dia. … 8-10 mm
Conductor Area … Not Exceeding 0.75-1.5 mm2Models with Proportional Pilot
Relief Valve (EFBG-03-250-C/H)
Only.

293.5

255.4

236.4

Lock Nut
10 Hex.

274.5

View Arrow Z

INC.

Air Vent
3 Hex. Soc.
3 Places

26 Dia. (Max.)
3 Places (" P", "A" & "T" Ports)

76.8

6.2 Dia. (Max.)
3 Places (" V", "X" & "Y" Ports)

130

7 Dia.
7 Deep2 Places (For Locating Pins)

45
X
AYTV
11.7125

SeriesHigh Flow Series Flow Control and Relief Valves

101.6

P

14.2

Prepare a mounting surface as shown to the right.
Also finish it finely. 1.6

12.7

0.8

95.3

24.8

Dimensions of Valve Mounting Surface

87.9

50.8

59

Z

101.6

28.6

Locating Pins
6 Dia. 2 Places

102.4

Mounting Surface(O-Rings Furnished)

E Series
High Flow Series Flow Control and Relief Valves

996100Approx. Mass ...... 19 kg

M12 Thd.
24 Deep
4 Places

H-147

Models with Proportional Pilot Relief ValveEFBG-06-500 - C
H(-E)-51

26 Dia. Spotface
4 Places

17Pilot Pressure Port " X"
(Rear Side)Air Vent
3 Hex. Soc.
3 Places
Outlet Port " A"
Cable Departure (For Flow Control)
Cable Applicable:
Outside Dia. … 8-10 mm
Conductor Area
… Not Exceeding 0.75-1.5 mm2

Inlet Port "P"

146.1

151.3

112

26.3
133.4

180

180

Pressure Adj. Screw for Safety Valve
3 Hex. Soc.
INC.

215.8

Manual Flow Adj.Screw
3 Hex. Soc.
17.5 Dia. Through INC.

Models without Proportional Pilot
Relief ValveEFBG-06-500(-E)-51

Pressure Adj. Screw
for Safety Valve
3 Hex. Soc.
Lock Nut
10 Hex.

33111

Tank Port " T"

Drain Port " Y"
Vent Port " V"

Cable Departure (For Pressure Control)
Cable Applicable:
Outside Dia. … 8-10 mm
Conductor Area
… Not Exceeding 0.75-1.5 mm2●For other dimensions, please refer to the models
with Proportional Pilot Relief Valve.

Manual Pressure Adj.Screw
3 Hex. Soc.
INC.
Sling Fitting
2 Places

Approx. Mass ...... 33 kg

95896288.5

273.3

311.5

Air Vent
3 Hex. Soc.
3 Places

Locating Pins
16 Dia. 2 Places

Mounting Surface(O-Rings Furnished)

Approx. Mass ...... 35 kg
146.1

Dimensions of Valve Mounting Surface

144.5

Prepare a mounting surface as shown to the right.
Also finish it finely. 1.6

35 Dia. (Max.)
3 Places (" P", "A" & "T" Ports)

115
73.1

M16 Thd. 30 Deep
4 Places

31AV

1.9

7 Dia. (Max.)
17180

T

133.4

Y

110

85.7

X

41.3

P

26.3

180

7.5

1.6

H-148

INC.

17 Dia.
10 Deep
2 Places (For Locating Pins)
14 Dia. (Max.)

SeriesHigh Flow Series Flow Control and Relief Valves

SERIES
Models with Proportional Pilot Relief ValveC
EFBG-10-1000 - (-E)-51
H
Pressure Adj. Screw
Inlet Port "P"
Manual Flow Adj.Screw
3 Hex. Soc.
INC.
23.5

INC.

21.5 Dia. Through32 Dia. Spotface
4 Places

Cable Departure (For Flow Control)
Cable Applicable:
Outside Dia. … 8-10 mm
Conductor Area
… Not Exceeding 0.75-1.5 mm2

Pressure Adj. Screw
for Safety Valve
3 Hex. Soc.
INC.

232

177.8

73

31

196.9

160.8

Pilot Pressure Port " X"

244

for Safety Valve
3 Hex. Soc.
Lock Nut
10 Hex.

130.5

Air Vent
3 Hex. Soc.
3 Places

Sling Fitting
2 Places

Models without Proportional Pilot
Relief ValveEFBG-10-1000(-E)-51

Lock Nut
10 Hex.
43.5

Tank Port " T"
Drain Port " Y"
Vent Port " V"137
Outlet Port " A"

Air Vent
3 Hex. Soc.
3 Places

Cable Departure (For Pressure Control)
Cable Applicable:
Outside Dia. … 8-10 mm
Conductor Area … Not Exceeding 0.75-1.5 mm2Manual Pressure Adj.Screw
3 Hex. Soc.
INC.

● For other dimensions, please refer to the models
with Proportional Pilot Relief Valve.

342.5

285

Dimensions of Valve Mounting Surface

198.4
1.6

50 Dia. (Max.)
3 Places (" P", "A" & "T" Ports)

196.9
159.7

20 Dia.
15 Deep
2 Places (For Locating Pins)

98.5

14.3

37.3

P115

119232X

YAV
7 Dia. (Max.)

146.8

M20 Thd.
32 Deep
4 Places31

Prepare a mounting surface as shown to the right.
Also finish it finely. 1.6

E Series
High Flow Series Flow Control and Relief Valves

Approx. Mass ...... 76 kg

177.8

Locating Pins
18 Dia. 2 Places

55.5

Mounting Surface(O-Rings Furnished)

10120

365.5

327.3

Approx. Mass ...... 74 kg

T23.5
244
7 Dia. (Max.)

SeriesHigh Flow Series Flow Control and Relief Valves

14 Dia. (Max.)

H-149

■ Step Response

Viscosity: 30mm2/s

These characteristics have been obtained by measuring on each valve.
Therefore , they may vary according to a hydraulic circuit to be used.

500

200

400

150
100
500.25s

2000.25s

100

750
600
450300

Time0.25s

150

Step Signal

0

EFBG-10-1000

900300

Step Signal

0

EFBG-06-500
Flow Rate L/min

250

Flow Rate L/min

Flow Rate L/min● Flow Controls
EFBG-03-250

Step Signal

0TimeTime● Pressure Controls

EFBG-03-250-H

28

EFBG-06-500-H

242020120.2s

8161280.25s

44

Step Signal

0Flow Rate L/min

150100EFBG-06-500

400300200

20

EFBG-03-250

2520

EFBG-03-250-H

1510500

EFBG-03-250-C
200

800
600
400
200200400
Input Current

600mA

0

800

0200
400
600
800900
Input Current
mA

Viscosity: 30mm2/s

Pressure MPa

2500800 900

EFBG-10-1000

1000

100
200
400600
Input Current
mA

Step Signal
Time400600
800 900
Input Current
mA

EFBG-06-500

25

EFBG-06-500-H

1510500

EFBG-06-500-C
200400600
Input Current
mA

EFBG-10-1000
EFBG-10-1000-H

20

Pressure MPa

Flow Rate L/min

500

20000.25s

0Flow Rate L/min

EFBG-03-250■ Input Current vs. Pressure

Pressure MPa

8Viscosity: 30mm2/s

50H-15012Time■ Input Current vs. Flow

0164

Step Signal

0Time

250

Pressure MPa

242016

EFBG-10-1000

2824

Pressure MPa

Pressure MPa

28800 900SeriesHigh Flow Series Flow Control and Relief Valves

1510500

EFBG-10-1000-C
200

400
600
800 1000
Input CurrentmASERIES■ List of Seals, Solenoid Ass'y and Safety ValveEFBG-03-250-- -51/5190

5732283046YXZX

43 52

32YZ

1547

48

26142713251637W

324W

56

23423944 40 45 58
Section X-X
172151

3436

5433

201254

1950

2251

49

61884111242 60 61 59 62 64 63

42 10 38135

7940 55
Section Y-Y
53

Section W-W
Section Z-Z● List of Seals
Item
33
3435
36
37
38
3940
41
42
43
4445

Name of Parts
O-RingO-RingO-RingO-RingO-RingO-RingO-RingO-RingO-RingO-RingO-RingO-RingO-RingPart Numbers
OR NBR-90 P42-N
OR NBR-90 P32-N
OR NBR-90 P30-N
OR NBR-90 P28-N
OR NBR-90 P22-N
OR NBR-90 P21-N
OR NBR-90 P20-N
OR NBR-90 P14-N
OR NBR-90 P11-N
OR NBR-90 P9-N
OR NBR-90 G30-N
AS568-013(NBR-90)
OR NBR-70-1 P6-N

Qty.
1
1
1
1
1★
1
1★
2
2
6
3
1
1

★O-rings, item 37 and 39, are used only with the proportional pilot relief valve (EFBG-03-250-C/H).

● Solenoid Ass'y and Safety Valve
Valve Model Numbers
EFBG-03-250-C/H(-E)-51
EFBG-03-250(-E)-51㉙ Solenoid Ass'y Model No.
E318-Y06M1-04-61—㉚ Solenoid Ass'y Model No.

㉛ Safety Valve Model No.

E318-Y06M1-28-61

SB1094-2002

E Series
High Flow Series Flow Control and Relief Valves

31

Detail of Safety Valve(Item 31)29

Note 1) For details on the solenoid ass'y, refer to proportional pilot relief valve (page H-97).
Note 2) The connector assembly GDM-211-B-11 (Item 32) is not included in the solenoid assembly.

SeriesHigh Flow Series Flow Control and Relief Valves

H-151

■ List of Seals, Pilot Valves, Solenoid Ass'y and Safety ValveEFBG-06-500-- -51/5190

21U48
38232522QW

S

Y

32

Y

28

U

50 37 31 36
Section S-S

3983

164240171144

1972920534

33334626935

QW455 56 54 51 53 52

24

SY

Detail of Safety Valve (Item 24)
Models Without Pilot Relief
Valve : EFBG-06-500(-E)

Z

42

10Z

1418

27

1249
13 35 2 30

47

33 43

Section U-U

32
Section Q-Q

28 1 15 6● List of Seals
Item
26
27
28
2930
31
32
33
34
35
3637

Name of Parts
O-RingO-RingO-RingO-RingO-RingO-RingO-RingO-RingO-RingO-RingO-RingO-RingPart Numbers
OR NBR-90 P46-N
OR NBR-90 P42-N
OR NBR-90 P40-N
OR NBR-90 P36-N
OR NBR-90 P34-N
OR NBR-90 P14-N
OR NBR-90 P11-N
OR NBR-90 P9-N
OR NBR-90 G55-N
OR NBR-90 G30-N
AS568-013(NBR-90)
OR NBR-70-1 P6-N

Qty.
1131
1
1★
441
2
1★
1★

41 40

40
Section Z-Z

Section W-W★O-rings, item 31, 36 and 37, are used only without the proportional pilot relief valve [(EFBG-06-500(-E)].

● Pilot Valve, Solenoid Ass'y and Sefety Valve
Valve Model NumbersEFBG-06-500-C(-E)-51
EFBG-06-500-H(-E)-51
EFBG-06-500(-E)-51㉒ Pilot Valve Model Numbers
EDG-01V-C-1-PNT11-5103
EDG-01V-H-1-PNT11-5103—㉓ Solenoid Ass'y Model No.
E318-Y06M1-28-61

Note 1) For details on the pilot valves, refer to proportional pilot relief valve (page H-97).
Note 2) The connector assembly GDM-211-B-11 (Item 25) is not included in the solenoid assembly.

H-152

SeriesHigh Flow Series Flow Control and Relief Valves㉔ Safety Valve Model No.
——SB1094-2002

SERIES■ List of Seals, Pilot Valves, Solenoid Ass'y and Safety ValveEFBG-10-1000- - -51

X

3738

Y

248403925
26

4123Z

29X21Z

48
33Y714172053 52 55 51 56

48

49

A

43

47

46

41

44259 54 58 60 57
Section Y-Y

41 21 8 41 28
Section X-X

30

10911
15

27

2245

20

31
32
34

5212
Detail A

Section Z-Z

20 44 16 43 1 43 45 35● List of Seals
Item
41
42
43
44
45
46
58
59
60

Name of Parts
O-RingO-RingO-RingO-RingO-RingO-RingO-RingO-RingO-RingPart Numbers
OR NBR-90 P11-N
OR NBR-90 P55-N
OR NBR-90 G45-N
OR NBR-90 G50-N
OR NBR-90 G55-N
OR NBR-90 G65-N
OR NBR-90 P14-N
AS568-013(NBR-90)
OR NBR-70-1 P6-N

Qty.
8131411★
1★
1★

★ ‌O-rings, item 58, 59 and 60, are used only without the proportional pilot relief valve [EFBG-10-1000(-E)].

● Pilot Valve, Solenoid Ass'y and Safety Valve
Valve Model Numbers

EFBG-10-1000-C(-E)-51
EFBG-10-1000-H(-E)-51
EFBG-10-1000(-E)-51㉔ Pilot Valve Model Numbers
EDG-01V-C-1-PNT20-5197
EDG-01V-H-1-PNT20-5197—㉕ Solenoid Ass'y Model No.
E318-Y06M1-28-61

Note 1) For details on the pilot valves, refer to proportional pilot relief valve (page H-97).
Note 2) The connector assembly GDM-211-B-11 (Item 25) is not included in the solenoid assembly.

SeriesHigh Flow Series Flow Control and Relief Valves㉓ Safety Valve Model No.
——SB1094-2002

E Series
High Flow Series Flow Control and Relief Valves

36

Detail of SafetyValve (Item 23)
Models Without Pilot Relief
Valve : EFBG-10-1000(-E)

H-153

■ Interchangeability between Current and New Design

EFBG-03/06/10 series valves have changed model from 50 to 51 design in line with the model change of solenoid ass'y.

● Specifications and Characteristics
The input current and pressure–flow characteristics differ between the new and old models. Ask Yuken for details.
No changes in specifications and characteristics between current and new design.
● Mounting Interchangeability
There is an interchangeability in the mounting dimensions between current and new design, however, note that because ofimprovements made on the solenoids, the overall shapes have been changed as shown below.
・EFBG-03
Current : Design 50Air Vent

Air Vent
275.5

294.5

See EDG-01(page H-98)
for the details of
the solenoid ass'y

Manual Flow Adj. Screw

Manual Pressure Adj. Screw

Air Vent
3 Places

Air Vent
3 Places
293.5

Manual Pressure Adj. Screw

274.5

Manual Flow Adj. Screw

New : Design 51

See EDG-01(page H-98)
for the details of
the solenoid ass'y

・EFBG-06/10
Current : Design 50
Pressure Adj. Screw
for Safety ValveSee EDG-01(page H-98)
for the details of
the solenoid ass'y

Air Vent

Air Vent
3 Places

Manual Pressure Adj. Screw

Manual Pressure
Adj. Screw311.5

312.5

Pilot Valve
EDG-01, 51＊DesignSee EDG-01(page H-98)
for the details of
the solenoid ass'y

Air Vent

H-154

Pressure Adj. Screw
for Safety Valve

Air Vent
3 Places

216.8

Pilot Valve
EDG-01, 50＊Design

Manual Flow Adj. Screw

215.8

Manual Flow Adj. Screw

New : Design 51SeriesHigh Flow Series Flow Control and Relief Valves