E Series

40Ω-10Ω Series Proportional Electro-Hydraulic

Relief and Flow Control Valves

■ 40 Ω-10 Ω Series Proportional Electro-Hydraulic Relief and Flow Control ValvesThis relief and flow control valve is an energy-saving valve that

supplies the minimum pressure and flow necessary for actuator drive.

Since this valve controls the pump pressure by following the load

pressure while keeping the differential pressure minimized, it servers as

a low power-consumption energy-saving, metre-in, controlled flow

control valve.

Further, since a temperature compensation function is incorporated, this

valve provides consistent flow control irrespective of the fluid

temperature.

■ Specification

Model No.

Description

EFBG-03-125 EFBG-06-250

Max. Operating Pressure Kgf/cm2 250 250

Max. Flow L/min 125 250

Metred Flow Adjustment Range L/min 1-125 2.5-250

Flow

Controls

Rated Current mA 680 580

Coil Resistance Ω 45 43.5

Differential Pressure

Kgf/cm2

6 7

Hysteresis 7% or Less 7% or Less

Repeatability 1% or Less 1% or Less

Pressure

Controls

Pres. Adj. Range Kgf/cm2

C: 14-140

H: 14-210

C: 15-140

H: 14-210

Rated Current mA C: 710

H:770

C: 690

H: 730

Coil Resistance Ω 10 10

Hysteresis 3% or Less 3% or Less

Repeatability 1% or Less 1% or Less

Approx. Mass Kg. Refer to Dim. Drawing.

*1: The rating for pressure controls is applied to models with proportional pilot

relief valve. (Ex. EFBG-03-125-C-※-15)*2: Pressure Adjustment range of the valves without proportional pilot relief

valves is from a minimum adjustable pressure to 250 Kgf/cm2.

A

OM

V

T

Y

P

V

OM

A

Y

T

P

With Proportional

Pilot Relief Valve

Without Proportional

Pilot Relief Valve

Graphic Symbols

E SERIES

EIC-H-1005-0

40Ω-10Ω SeriesProportional Electro-

Hydraulic Relief and Flow Control

Valves

1

H

E Series

40Ω-10Ω Series Proportional Electro-Hydraulic

Relief and Flow Control Valves

■ Model Number DesignationEFB G -03 -125 -C -15

Series

Number

Type of

Mounting

Valve

Size

Max. Metred Flow

L/min.

Proportional Pilot Relief Valve

Pressure Adjustment Range

Design

Number

EFB:

Proportional Electro

Hydraulic Relief and

Flow Control Valve

G: Sub-Plate

Mounting

03 125 : 125 C,H:

See Specifications

None:

Without Proportional Pilot Relief

Valve

15

06 250 : 250 15

■ Applicable Power Amplifiers

■ Sub-Plate

Valve Model Number Socket Head Cap Screw Qty. Bolt Kit Ordering Code

EFBG-03 M10 x 100 Lg. 4 BKBG-03-15

EFBG-06 M16 x 130 Lg. 4 BKBG-06-15

For stable Performance, it is recommended that YUKEN’s applicable power amplifiers be used.

Model Numbers Power Amplifier Model Numbers

For Flow Control For Pres. Control

EFBG- -※-※-15 AME-D-S-※-40 AME-DF-S-※-22 AME-T-S-※-22 ---

PW100-※-H11 EFBG- -※-※- -15 PW100-※-H11,

AME-D2-H1-※-12 Valve

Model

Number

Sub-Plate

Model Number

Piping

Size

Mass

Kg.

EFBG-03 EFBGM-03Y-1080 3/4 BSP.F

6 EFBGM-03Z-1080 1 BSP.F

EFBG-06 EFBGM-06X-1080 1 BSP.F 12.5

EFBGM-06Y-1080 1-1/4 BSP.F 16

Sub-Plates are available. Specify sub-plate model from the table above. When sub-plates are not used, the mounting surface

should have a good machined finish.

■ InstructionsDrain Back Pressure

Check that the drain back pressure does not exceed 2 Kgf/cm2

When Relief Valve Passing Flow Rate is Low in Pressure Control State

To avoid preselected pressure instability, use a passing flow rate of 10L/min. or higher for nominal sizes 03

and 06. Further, check that the tank-line back pressure does not exceed 5 Kgf/cm2

Safety Valve Pressure Setting

The safety valve is preset to a pressure that is 2 Kgf/cm2 higher than the maximum adjustment pressure.

Therefore, adjust this pressure setting as needed to suit the pressure used.

To lower the pressure setting, turn the safety valve pressure adjustment screw anti-clockwise. After

adjustment, be sure to tighten the lock nut.

03

06

C

H

03

06

E SERIES

2

■ AttachmentMounting Bolts

EFBG-03-125- -15

E Series

40Ω-10Ω Series Proportional Electro-Hydraulic

Relief and Flow Control Valves

174

47.7

29.7

Fu

lly

Ex

tend

ed 1

02

Lock Nut

10 Hex.Pressure Adjustment

Screw for Safety Valve3 Hex. Soc.

Inc.

■ Model with Proportional Pilot Relief ValveC

H

■ Model without Proportional Pilot Relief ValveDIMENSIONS IN

MILLIMETRES

85

164

.5

21

2

80

41

10

1.5

57.5

17

1

6

Two Locating Pins

6 Dia.

Mounting Surface

(O-Ring Furnished)

Connector

The Direction can be

altered to 90 degree

angle

Cable Departure

Cable Applicable:

Outside Dia. ... 8-10mm

Conductor Area

.... Not Exceeding 1.5mm²

Connector

Full

y E

xte

nded

216

47

91.6

39

61.7

36.7

188

38

61

.8

10

1.6

14

.2

13

0

125

50.8

101.611.7

Cable Departure

Cable Applicable:

Outside Dia. ...8-10 mm

Conduction Area

..... Not Exceeding 1.5 mm²

Inlet Port "P"

11 Dia. x Thru.

17.5 Dia. Spotface

4 Places

Tank Port "T"

Manual Flow Adj. Screw

M4 Thd. (internal Thd.)

Vent Port "V"Drain Port "Y"

Outlet Port "A"

Manual Pressure

Adj. Screw

3 Hex. Soc.

The direction can

be altered to every

90 degree angles.

Air Vent

3 Hex. Soc.

Lock Nut10 Hex. Soc.

Pressure Adjustment

Screw for Safety Valve3 Hex. Soc.

Inc.

Inc.

For other dimensions, please refer to the models above. Approx. Mass……...14 Kg.

EFBG-03-125-15

Approx. Mass……...16 Kg.

E SERIES

3

40Ω-10Ω SeriesProportional Electro-

Hydraulic Relief and Flow Control

Valves

H

E Series

40Ω-10Ω Series Proportional Electro-Hydraulic

Relief and Flow Control Valves

247

42

67

17

4

133

.42

0.3

82

180

17 146.1

73

Fu

lly

Ex

ten

ded

217

39

99

.139

.5

80

107

196

.3

24

4

62

130

19

9.5

57

.5

7Two Locating Pins

6 Dia.

Mounting Surface

(O-Ring Furnished)

Manual Pressure

Adjustment Screw

3 Hex. Soc.

Cable Departure

Cable Applicable:

Outside Dia. ... 8-10 mm

Conductor Area

... Not Exceeding 1.5mm²

Connector

Inlet Port "P"

Cable Departure

Cable Applicable:

Outside Dia. ... 8-10 mm

Conductor Area

... Not Exceeding 1.5mm²

Lock Nut

10 Hex.

Pressure Adjustment

Screw for Safety Valve

3 Hex. Soc.

17.5 Dia. x Thru.

26 Dia. Spotface

4 Places

Tank Port "T"

Manual Flow Adj. Screw

M4 Thd. (Internal Thd.)Drain Port "Y"

Outlet Port "A"

Air Vent3 Hex. Soc.

The direction can

be altered to every

90 degree angles.

Vent Port "V"Air Vent

3 Hex. Soc.

inc.

inc.

inc.

233

5335

Fu

lly E

xte

nd

ed 1

19

Pressure Adjustment

Screw for Safety Valve3 Hex. Soc.

Lock Nut10 Hex.

Inc.

■ Model with Proportional pilot Relief ValveC

H

■ Model without Proportional pilot Relief Valve

DIMENSIONS IN

MILLIMETRES

For other dimensions,

please refer to the models above.

Approx. Mass……...28 Kg.

EFBG-06-250- -15

EFBG-06-250-15

Approx. Mass...30 Kg.

E SERIES

4

E Series

40Ω-10Ω Series Proportional Electro-Hydraulic

Relief and Flow Control Valves

20

59

80

100

10

1.6

13

0

14

.2 23.8

50.8

77.8

102.4

0.8 101.6

11.7

125

12.5

28.6

88

.9

95

.3

22.2

39.2

106.8

146

168

20 4

0

M10 Thd. x18 Deep

4 Places

11 Dia. x Thru.

17.5 Dia. Spotface

4 Places

23 Dia. 3 Places

7 Dia. x 7 Deep

2 Places

"A" Thd.

3 Places

1/4 BSP.F Thd.

11 Dia. x 1/4 BSP.F Thd.

( From Rear)

6 Dia.

D

C

33

19 212

250

3.7

12.7

41.3

85.7

107

133

.4

16

B

126

174

1.6

28.1

73.1

118.1

144.5146.1180

17.5 Dia. x 10Deep

2 Places

29 Dia.

3 Places

17

M16 Thd. x 30 Deep

4 Places

17.5 Dia. x Thru.

26 Dia. Spotface

4 Places

6.2 Dia. x 1/4 Thd.

(From Rear)15.2 Dia. x 3/8 Thd.

(From Rear)

"E" Thd. 3 Places

Sub-Plate

Model No.

Dimension mm Thread Size

“E” Thd. B C D

EFBGM-06X-1080 107 45 35 1 BSP.F

EFBGM-06Y-1080 95 60 40 1-1/4 BSP.F

Sub-Plate

Model No.

Thread Size

“A” Thd.

EFBGM-03Y-1080 3/4 BSP.F

EFBGM-03Z-1080 1 BSP.F

DIMENSIONS IN

MILLIMETRES

EFBGM- -1080

EFBGM- -1080

E SERIES

03Y

03Z

06X

06Y

5

40Ω-10Ω SeriesProportional Electro-

Hydraulic Relief and Flow Control

Valves

H

0

20

40

60

80

100

120

140

160

Step Signal

0.1 s

Time Time

0

50

100

150

200

250

300

L/min.

Flo

w R

ate

Flo

w R

ate

60

100

140

180

220

Kgf/cm²

Pre

ssu

re

L/min.

Time Time

60

100

140

180

220

Kgf/cm²

Pre

ssu

re

Flo

w R

ate

L/min.

00

25

50

75

100

125

50

00

100

150

200

250

300

Flo

w R

ate

L/min.

100 200 300 400 500 600

Input Current mA Input Current mA

100 200 300 400 500 600 700

0.2 s

Step Signal

0.2 s

Step Signal

EFBG-03-125-H

EFBG-03-125-C

EFBG-06-250-H

EFBG-06-250-C

Step Signal

0.1 s

E Series

40Ω-10Ω Series Proportional Electro-Hydraulic

Relief and Flow Control Valves

■ Step Response (Flow Controls)These values were measured on independent valves. They vary by circuit

■ Step Response (Pressure Controls)These values were measured on independent valves. They vary by circuit

■ Input Current vs. Flow

EFBG-03 EFBG-06

EFBG-03 EFBG-06

EFBG-03 EFBG-06

E SERIES

6

E Series

40Ω-10Ω Series Proportional Electro-Hydraulic

Relief and Flow Control Valves

■ Spare Parts ListList of Seals

Note: When Ordering the seals, please specify the seal kit numbers from the table below.

List of Seals

Sl.

No. Name of parts Part Numbers

Qty.

EFBG-03 EFBG-06

1 O-Ring SO-NB-P18 1 1

2 O-Ring SO-NA-P10A 1 1

3 O-Ring SO-NB-P9 5 2

4 O-Ring SO-NB-P11 2 3

5 O-Ring SO-NB-P15 1 1

6 O-Ring SO-NA-P26 - 1

7 O-Ring SO-NB-P28 6 1

8 O-Ring SO-NB-P30 - 1

9 O-Ring SO-NB-G30 1 1

10 O-Ring SO-NB-P32 1 1

11 O-Ring SO-NB-P36 - 1

12 O-Ring SO-NB-P42 - 1

13 O-Ring SO-NB-P44 - 1

Model numbers Seal Kit Numbers

EFBG-03-15 KS-EFBG-03-15

EFBG-06-15 KS-EFBG-06-15

■ Input Current vs. Pressure

200 400 600 800 10000

0

50

100

150

200

250

Kgf/cm²

Pre

ssure

Input Current mA Input Current mA

200 400 600 800 10000

0

50

100

150

200

250

Kgf/cm²

Pre

ssure

EFBG-03-125-C

EFBG-03-125-H EFBG-06-250-H

EFBG-06-250-C

EFBG-03 EFBG-06

E SERIES

7

40Ω-10Ω SeriesProportional Electro-

Hydraulic Relief and Flow Control

Valves

H