SERIES■ Proportional Electro-Hydraulic Directional and Flow Control Valves
These valves are double-deck directional and flow control valves employing as their pilot the electro-hydraulic proportionalpressure reducing valves with two proportional solenoids. The flow rate can be controlled by changing an input current to thesolenoids and the direction of the flow can be controlled by providing the current to either solenoid of the two.
By combining the valves with the power amplifiers specially designed for the valves, the speed control, acceleration, decelerationand directional control can be done with a single valve, which eventually makes the hydraulic circuits simple and contributes thecost of the hydraulic systems.

■ Specifications
Model No.

Max. Operating Pressure

EDFHG-03

MPa

Pilot Pressure ★2

100140MPa

L/min

1at Transition

13462121800980Max. Drain Line Back Pressure ★3 MPa
mACoil Resistance

Ω

116

MPa

Rated Current

280

1.5 - 16

at Normal

Max. Tank Line Back Pressure

3.0
900

10Hysteresis

5% or less ★4

Repeatability

1% or less ★4

Approx. MassEDFHG-06

25

Rated Flow ★1 L/minat Valve Pressure Difference: 1.0 MPa
Pilot FlowEDFHG-04kg111215★1. ‌The rated flow rate is valid at a differential pressure of 1.0 MPa of “P→A(B)” or “A(B)→T.”★2. ‌Take care to keep the difference between the pilot pressure and drain port back pressure
consistently greater than 1.5 MPa.
★3. ‌To obtain stable performance, keep the drain port back pressure low and minimize its
fluctuations.
★4. ‌The hysteresis and repeatability values indicated in the specifications for each control valve aredetermined 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 thesame conditions.

Graphic Symbols
External Pilot TypeaA

BPTbInternal Pilot Typea

Y X

A

B

PTb
Y

■ Model Number Designation
EDFH

G

-03

-100

SeriesNumberType ofMounting

Valve
Size

Rated Flow
L/min

03

100

EDFH:
Proportional
ElectroHydraulic
Directional andFlow Control
Valves

G: Sub-Plate
Mounting-3C2-XY-E-31

Spool Type★1

Direction ofFlow

PilotConnection

DesignNumber

XY: Meter-in
Meter-outE:External Pilot
None:
Internal Pilot

3C204

14006

280

3C40

★1. Spool‌type shown in the column is for the center position.

31
31
31E Series
Directional and Flow Control Valves

Descriptions■ Accessories● Mounting Bolts
Model Numbers

Socket Head Cap Screw

Qty.

EDFHG-03

M6 × 35 L

4

M10 × 50 L

4

EDFHG-04
EDFHG-06

M6 × 45 L

M12 × 60 L

2
6Tightening TorqueNm
12 - 15
12 - 1558 - 72

100 - 123

SeriesDirectional and Flow Control Valves

H-157

■ Sub-Plate
Valve ModelNumbers

Thread Size
RcApprox. Masskg

DHGM-04-20

1/24.4

DHGM-04X-20

3/44.1

DHGM-06-50

3/4

DHGM-06X-50

1

Sub-Plate Model Numbers

EDFHG-03

DHGM-03Y-10

EDFHG-04
EDFHG-06

3/4

4.7

7.4

● ‌Sub-plates are available. Specify the sub-plate model number from the table above. When sub-plates are not used, the mounting surface shouldhave a good machined finish. 1.6● ‌Sub-plates are those for solenoid controlled pilot operated directional valves. For details, contuct us.

■ Applicable Power Amplifiers

For stable performance, it is recommended that Yuken's applicable power amplifiers be used (for details see page H-188).
Model Numbers: SK1091-D24-10■ Instructions● Manual Adjustment
In the event of an electric fault or emergency, a manual shift can be made by screwing in the manual adjustment screw.
Take care, however, that this manual shift has no flows adjusting function.
For this operation, set the pilot pressure (or P-port pressure on an internal-pilot model) below 7 MPa.
After operation, be sure to return the manual adjustment screw completely to the original position.
● During Piping
During piping work, special care should be taken so that the tank port “T” is constantly filled with hydraulic fluid.
Because back pressure is applied, using a check valve whose cracking pressure is about 0.04 MPa is recommended.
Also, connect the tank port piping directly to the oil tank, but do not connect it other piping. For this reason, be sure to immerse
the pipe end in fluid.

■ Sub Plates: DHGM-03Y
120
15

8.8 Dia. Through14 Dia. Spotface
4 Places

90
1811 Dia.
4 Places62

Rc 1/4 Thd.

54

Rc 1/4 Thd.

37.3

5027

43

16.7

428 3.2

45

25

106.2 Dia.

1992

H-158

M6 Thd. 13 Deep
4 Places

SeriesDirectional and Flow Control Valves

Rc 3/4 Thd.
4 Places

477670TB

A
6.2 Dia.

16P1912116.4

21.5

32.5

46

90

110

2219X

Y

102580SERIES
Mounting Surface: Conform to ISO 4401-05-05-0-05

EDFHG-03

Cylinder Port "B "Pressure Port "P"

Cylinder Port "A "Pilot Drain Port "Y"

Pilot Pressure Port "X"

114.9

Connector
The direction can be alteredto every 90 degree angles.
Cable Departure
Cable Applicable:
48
Outside Dia. … 8-10 mm
Conductor Area
27.5
… Not Exceeding 0.75-1.5 mm270

125446Note) For valve mounting surface
dimensions, see the dimensional
drawings of sub-plates (page H-158)
in common use.

285.8

Connector
The direction can be alteredto every 90 degree angles.

7 Dia. Through11 Dia. Spotface
4 Places

Tank Port "T"

93.5

37.5

39

SOL a

179.5
110

ManualAdjustment
Screw
3 Hex.Soc.
(Both Ends)

SOL b

26

57.5

Air Vent
3 Hex. Soc.
3 Places (Both Ends)

Mounting Surface(O-Rings Furnished)

27

Of the two tank ports "T", the tankport in the left side is normally usedin our standard sub-plate, though,either side of the tank port "T" can beused without problem.

79212

Mounting Surface: Conform to ISO 4401-07-07-0-05
Pressure Port " P"

Tank Port " T"

Air Vent
3 Hex. Soc.
3 Places(Both Ends)

435

34

116

185.5

57.5

27.5

Locating Pins
3 Dia. 2 Places

Pilot Drain Port " Y"7 Dia. Through11 Dia. Spotface
2 Places
65.5

Cylinder Port " B"
65.5

SOL a

39

91

72.9

50

E Series
Directional and Flow Control Valves

48

34

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

91.3

9.1Note) For valve mounting surface dimensions,see the dimensional drawings ofsub-plates (page H-62) in common use.

Connector

101.6

11 Dia. Through17.5 Dia. Spotface
4 Places

69.8

Position of cable departure can be changed.
For details, refer to above EDFHG-03.

Pilot Pressure Port " X"

285.8

1.5

EDFHG-04

SOL b

ManualAdjustment
Screw
3 Hex.Soc.
(Both Ends)
Mounting Surface(O-Rings Furnished)

50.4
204

SeriesDirectional and Flow Control Valves

H-159

Mounting Surface: Conform to ISO 4401-08-08-0-05

EDFHG-06

Pressure Port "P"
285.8
65.4

130.2

Tank Port "T"

92.1

53.2

Pilot Pressure Port "X"

48

Cylinder Port "A "206.5

13.5 Dia. Through20 Dia. Spotface
6 Places

Cylinder Port "B "
65.5

65.5

SOL a

SOL b

ManualAdjustment
Screw
3 Hex.Soc.
(Both Ends)

40

41

137

77

39

Air Vent
3 Hex. Soc.
3 Places (Both Ends)

57.5

27.5

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

13Connector

118

Position of cable departure can be changed. For
details, refer to EDFHG-03 valve on page H-159.
Note) For valve mounting surface dimensions,see the dimensional drawings of sub-plates(page H-62) in common use.

Pilot Drain Port "Y"

6Locating Pins
6 Dia. 2 Places

50.3

Mounting Surface(O-Rings Furnished)
255■ Interchangeability between Current and New Design● Specifications and Characteristics
The input current and flow characteristics differ between the new and old models. Consult Yuken for details.
Also, There is no change in specifications and characteristics between current and new design.
● Installation 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 and dimensions have been changed as shown below.

AB

H-160

(Current)(New)(Current)(New)(Current)(New)

Model Numbers

EDFHG-03-100-＊-＊-＊-30
EDFHG-03-100-＊-＊-＊-31
EDFHG-04-140-＊-＊-＊-30
EDFHG-04-140-＊-＊-＊-31
EDFHG-06-280-＊-＊-＊-30
EDFHG-06-280-＊-＊-＊-31

SeriesDirectional and Flow Control Valves

AB

117.9
116.9
93.9
92.9
66.4
65.4

287.8
285.8
287.8
285.8
287.8
285.8SERIES■ Input Current vs. Flow

■ Valve Pressure Difference vs. Flow
Viscosity : 30 mm2/s

A (B), B (A)T 1 MPaEDFHG-03
140

EDFHG-03

40

Valve Pres. Diff.
MPa24.52416860

2424.540 Valve Pres. Diff. MPa

200

Input Current

200 400 600 800 1000mA

880
700 mAAB

120750 mA

PT

16

Flow Rate

1000 800 600 400 200

PT600 mA0600 mA

40

AB80

Flow Rate

L/min

PT80

Flow Rate

PTA B

100700 mA

L/min

120
A B

750 mA120

L/min

Viscosity : 30 mm2/s
Valve Pres. Difference : P140

EDFHG-04
280L/min
Valve Pres. Diff.
MPa

PT

24.5
24806016700mA

80808162424.5
Valve Pres. Diff. MPa
8040201000 800 600 400 200 0 200 400 600 800 1000
Input Current mA

AB

700mA

160800mA
900mA

240

PT

280

EDFHG-06
400

PT200

Valve Pres. Diff.
MPa168600 mA

24.5
24Flow Rate

150
100

700 mA

50
1000 800 600 400 200 0 200 400 600 800 1000
Input Current mA

800 mA

100

PT

800 mA

900 mA

SeriesDirectional and Flow Control Valves

PT

700 mA
600 mA
0100200ABAB

300

8162424.5
Valve Pres. Diff. MPa
L/min

200AB300

900 mA

Flow RatePT250
L/min

ABL/min300

Flow RateEDFHG-06

E Series
Directional and Flow Control Valves

AB160

PTL/min100

Flow Rate

PT120

L/min

AB800mA

AB

Flow Rate

160

Flow RateEDFHG-04
140900mA

240400H-161

■ Frequency Response■ Step Response

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

0- 20- 40- 60- 80-100-120-140-160-1800-10-20-300.2

Frequency Hz0.4 0.7 1247 102040

Viscosity : 30 mm2/s
Supply Pressure : 15.7 MPa

Gain
Phase

Gain dB

140
Flow Rate L/min

Phase deg.

EDFHG-03

Model Number : EDFHG-03-100-3C2-E-31
Viscosity : 30 mm2/s
Pilot Pressure : 15.7 MPa
Travel of Spool : ±10% of Maximum Stroke

EDFHG-03

120100800.1 s

60
40

Step Signal

0-10-20-30

Frequency Hz
0.4 0.7 1247 1020Time40

Gain

175
Flow Rate L/min

0- 20- 40- 60- 80-100-120-140-160-1800.2

Gain dB

Phase deg.

EDFHG-04

Phase

Model Number : EDFHG-04-140-3C2-E-31
Viscosity : 30 mm2/sPilot Pressure : 15.7 MPa
Travel of Spool : ±10% of Maximum Stroke

150125100507 10Gain

Phase

Model Number : EDFHG-06-280-3C2-E-31
Viscosity : 30 mm2/s
Pilot Pressure : 15.7 MPa
Travel of Spool : ±10% of Maximum Stroke

H-162

Step Signal

Time2040400

EDFHG-06

350
Flow Rate L/min

0-10-20-30
Gain dB

Phase deg.

0- 20- 40- 60- 80-100-120-140-160-180

Frequency Hz
0.4 0.7 1240.1 s

75

EDFHG-060.2

EDFHG-04

300
2502000.1 s

150100Series
Directional and Flow Control Valves

Step Signal

Time