Series Proportional ElectroHydraulic Controls
Max.
OperatingPressure
1MPa

Graphic
Symbols

Types

Pilot Relief Valves

24.5

Relief Valves

24.5

Relieving andReducing Valves

24.5

40 Series
Flow Control(and Check) Valves

20.6

OM

03:
20.6

10 Series
Flow Control(and Check) Valves
10 - 10 Series
Flow Control
and Relief Valves

O
M

X

35

1020 3050

100200 300

500

1000

H-93

EDG
01

EBG

ERBG

EFG
EFCG

EFG
EFCG

Page

03

06

06

03

06

03

03

EFBG

03

H-108

1002

EFBG

H-99

10H-118

10

H-128

06

06

H-135

10YO
M

24.5

VT

06

10H-145

PShockless Type
Directional andFlow Control Valves

High Response Type
Directional and Flow
Control Valves

24.52L/min

A

High Flow Series
Flow Controland Relief Valves

Directional andFlow Control Valves

06:
24.5

OM

Maximum Flow

A B

SOL.a

25

SOL.b

P Tab

A

B

X

P T

Y

A B

SOL.a

SOL.b

P T

25
01/03:
31.5
04/06:
35

EDFG

EDFHG

ELDFG

H-155

01

04

03

01

03

H-157

06

ELDFHG
04

06

H-163

Power Amplifiers.................................................................................................................................................... Page H-172
Setting Adjusters.................................................................................................................................................... Page H-194

Series Proportional Electro-Hydraulic Controls

H-89

Hydraulic Fluids
Fluid Types
Any type of hydraulic fluid listed in the table below can be used.
Petroleum Base Oils
Synthetic Fluids
Water-containing Fluids

Use fluids equivalent to ISO VG 32 or VG 46.

Use phosphate ester or polyol ester fluids. When phosphate ester fluid is used,prefix "F-" to the model number because the special seals (fluororubber) are required to be used.
Use water-glycol fluid.

Note: For use with hydraulic fluids other than those listed above, please consult your Yuken representatives in advance.

Recommended Fluid Viscosity and Temperature
Use hydraulic fluids which satisfy the both recommended viscosity and oil temperatures given in the table below.
NameViscosityTemperature

Pilot Relief Valves
Relief Valves
Relieving and Reducing Valves

15 - 400 mm 2/s

Flow Control Valves
Flow Control and Check Valves
Flow Control and Relief Valves

20 - 200 mm 2/s

Directional and Flow ControlValves

20 - 400 mm 2/s

0 - +60˚C

Shockless Type Directional andFlow Control Valves
High Response Type Directional
and Flow Control Valves(Direct Type)

20 - 200 mm 2/s

0 - +60˚C

High Response Type Directionaland Flow Control Valves(Two Stage Type)

15 - 400 mm 2/s-15 - +60˚C-15 - +70˚C

Control of Contamination
Due caution must be paid to maintaining control over contamination of the hydraulic fluids which may otherwise leadto breakdowns and shorten the life of the valve. Please maintain the degree of contamination within NAS 1638-Grade
11. Use 20 m or finer line filter.

H-90

Series Proportional Electro-Hydraulic Controls

SERIES
Instructions
Mounting
Be sure that the air vent faces up.
In addition, if the valve is mounted vertically, the minimum adjustment pressure is 0.2 MPa or higher.
[Good example][Bad example]

Air Vent

Air Vent

SOLSOLSOLSOLAir Vent

Air Vent

Air Vent

SOL

Air Vent

SOL

Air Bleeding
To ensure stable control, bleed the air from solenoid
completely and fill its core with oil.
Bleeding can be done by slowly loosening one of the air
vents at the end of the solenoid. Choose one of the three
air vents which is expected to work most effectively (seethe figure to the right).

Solenoid
Air Vent
3 Places

Manual Adjustment Screw

Manual Adjustment Screw

10Solenoid
CaseAir Vent

Manual Adjustment Pin
Manual adjustments can be done by screwing forexample an M4 20L screw in the M4 thread orpushing in a pin there with a rod etc.

M4 Screw40

Tank and Drain Piping

Series Solenoid

Series Solenoid

The tank-line back pressure and drain back pressure directly affect the minimum adjustment pressure. Therefore, do
not connect the tank or drain pipes to other lines, but connect them directly to the reservoir maintaining the backpressure as low as possible. Be sure that the tank and drain pipe ends are immersed in fluid.

E Series Proportional
Electro-Hydraulic Controls

When initial adjustments are to be made or when nocurrent is supplied to the valve due to electrical failure orother problem, turn the manual adjustment screw totemporarily set the valve pressure / flow rate. In thatcase, when turn the manual adjustment screw clockwise,
the valve pressure / flow rate increases. Under normal
condition, however, this screw must be kept in its
original position (see the figure to the right).

Hysteresis and Repeatability Value Indications

The hysteresis and repeatability values indicated in the specifications for each control valve are determined under
the following conditions:
Hysteresis Value:
Obtained when Yuken's applicable power amplifier is used.
Repeatability Value: Obtained when Yuken's applicable power amplifier is used under the same conditions.

Series Proportional Electro-Hydraulic Controls

H-91

Interchangeability between Current and New Model Change Products

Current

New

EDG-01

5051

YES

EBG-035051

YES

EBG-065051

YES

EBG-105051

YES

ERBG-06

5051

YES●P ilot Valve Change

ERBG-10

5051

YES

EFG
-03
EFCG

● No change in specifications

5051

YES

5051

YES

61

YES

● 03/06 : 50 , 51 →61
・Pilot Valve (EDG-01) is now integrated

61YESModel Numbers

Pilot Relief Valves
Relief Valves

Relieving and Reducing
Valves10Ω Series Flow Control(and Check) Valves

EFG-06EFCG
EFBG-0310Ω - 10Ω Series Flow
Control and Relief Valves

50・51
6050・51

Major Changes● Solenoid Assʼy Change●P ilot Valve Change

EDG-01V, 50→51 Design

EDG-01V, 5001→5101 Design● Solenoid Assʼy Change● No change in specifications
D

DPage
H-98
H-107

H-117

H-133

D

into the cover

H-144

EFBG-105051

YES

・Solenoid Assʼy Change
DDDD●0 3/06 : 60 , 61 , 10 : 50 →51
・Solenoid Ass'y ChangeEFBG-03

5051YES● Solenoid Assʼy Change

EFBG-06

5051

YES

EDFHG-033031YESEDFHG-04

3031YESEDFHG-06

3031YES

AME-D

4150YES

AME-DF

2250YESPower Amplifiers For HighResponse Type Directional
and Flow Control Valves

AMB-EL

1020

YES● Addition of input/output classification

H-194

Multifunction Slope
Controllers

AMC-T

1020YES● Compact and Lightweight●S hockless control mode and stop mode

H-200

High Flow Series Flow
Control and Relief Valves

Directional and FlowControl Valves
Power Amplifiers For 40Ω
Series Flow Control Valves

H-92

Design NumberInstallationInterchangeability

Name

EFBG-06

60●P ilot Valve Change EDG-01V, 5003→5103

H-154● Solenoid Assʼy Change● No change in specifications

H-160

Design● Solenoid Assʼy Change●A dditional power supply, functions andinstallation

functions added

Series Proportional Electro-Hydraulic Controls

H-180