SERIES■ Proportional Electro-Hydraulic Pilot Relief Valves
This valve consists of a small DC solenoid and a direct-acting relief valve.
It serves as a pilot valve for a low flow rate hydraulic system or a
proportional electro-hydraulic control valve and controls the pressure inproportion to the input current. Note that this valve is used in conjunction
with the applicable power amplifier.

■ Specifications
EDG-01

MPa

24.5

Max. Flow

L /min2Min. Flow

L /min0.3

Pressure Adj. Range

MPa

Refer to Model Number Designation

Rated CurrentmA

EDG-01 -B : 800EDG-01 -C : 900
EDG-01 -H : 950

Coil ResistanceΩMax. Operating Pres.

103% or less

Hysteresis

1% or lessRepeatability
kgMassGraphic Symbols

2

Without Safety ValveWith Safety Valve■ Model Number Designation
ED
Series Number

ED :Proportional
ElectroHydraulic
Pilot ReliefValve

G
Type ofMounting

G:
Sub-Plate
Mounting-01
Valve
Size01

V-C-1

Pressure Adj. Range
MPa

SafetyValve

None:
General Use

B: 0.5 - 6.9

V:
Vent Control ofRelief Valve(Omit if notrequired)

C: 1.0 - 15.7

None:
Without
SafetyValve

Applicable
Control 1

H: 1.2 - 24.5

1:
WithSafety
Valve

-PN
P-LineOrifice

T13
T-LineOrifice-51
2

DesignNumber

T15
PN:
WithoutOrifice(Standard)

T13

E Series
Pilot Relief Valves

Descriptions

Model Numbers

51

T11

1. When the valve is to be used for vent control purpose, orifice adjustment is required due to piping capacity limitations. Therefore, consult yourYuken representative in advance.
2. Standard orifices for T-line orifices are as follows.
Pressure Adj. Range B: T15, C: T13, H: T11
The orifice used as the pilot valve may differ from the standard orifice.

SeriesPilot Relief Valves

H-93

■ Accessories■ Applicable Power Amplifier● Mounting Bolts

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).
Model Numbers : AME-D-10-＊-20
AME-D2-1010-＊-11
SK1022-＊-＊-11
SK1015-11 (For DC power supply)
AMN-D-10 (For DC power supply)

Socket Head Cap Screw
M545 L ....... 4 pcs.

■ Sub-Plate
Piping Size

Sub-PlateModel Numbers

Thread Size
RcApprox. Masskg

1/8

DSGM-01-31

1/8

0.8

3/8

DSGM-01Y-313/80.8

1/4

DSGM-01X-31

1/40.8● Sub-plates are available. Specify the sub-plate model number from the table above. When sub-plates are not used,
the mounting surface should have a good machined finish. ( 1.6 )● Sub-plates are those for 1/8 solenoid operated directional valves. For dimensoins, see page H-8.

■ Instructions● Tank-Line Back Pressure
Check that the tank line back pressure does not exceed 0.2
MPa.
● Vent Control
When the valve is used for vent control of relief valves orothers, use the pipes of 6 mm ID. 300 mm or less length forconnection.
If the pressure is instable, provide a 1.0 to 1.5 mm diameterorifice to the vent port of the relief valves or others.
● Circuit Pressure Control
When the pressure in a circuit is directly controlled with thisvalve, set the trapped oil volume being more than 40cm3.

● Safety Valve Pressure Setting
The pressure of the safty valve at the maximum flow is presetat the value equal to the upper limit of the pressureadjustment range plus 2 MPa.
In case where the upper limit of operating pressure is low or
the upper limit of flow rate to be used is different from thespecified maximum flow, please adjust and determine thesetting pressure of the safety valve at the value calculated
from the following formula.
Setting pressure = (Operating pressure upper limit) +(Additional pressure indicated below)
To lower the setting pressure, turn the safety valve pressureadjustment screw anti-clockwise. After adjustment, be sure totighten the lock nut.

Additional Pressure MPa

2

1

001

Flow Rate L/min2

To lower the setting pressure, turn the safty valve pressureadjustment screw anti-clockwise.
After adjustment, be sure to tighten the lock nut.

H-94

Series
Pilot Relief Valves

SERIES

Without Safety Valve

Fully Extended 216
Fully Extended
52

79
40.5

20.50.75

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

5.5 Dia. Through
9.5 Spotface
4 Places

31INC.

Lock Nut
10 Hex.

The direction can be alteredto every 90 degree angles.

48

With Safety Valve

32.5

EDG-01＊-＊-PNT＊-51

8.5

EDG-01＊-＊-1-PNT＊-51

Pressure Port " P"
Tank Port " T"

● For other dimensions, refer to the without safety valve.

Connector(The direction can be alteredto every 90 degree angles.)Cable Departure
Cable Applicable:.
Outside Dia. … 8-10mm
Conductor Area …
… Not Exceeding 0.75-1.5 mm2
190.5

27.5

3986.5

26.5

Mounting Surface(O-Rings Furnished)

INC.

Note: For valve mounting surface dimensions, see the dimensional drawings of sub-plates (page H-8) in common use.

Series
Pilot Relief Valves

50E Series
Pilot Relief Valves

Manual Pressure Adj. Screw
3 Hex.Soc.

37.5

57.5
2594.5

Air Vent
3 Hex. Soc.
3 PlacesH-95

■ Step Response (Example)

Flow Rate: 2 L/min
Trapped Oil Volume : 40 cm3Viscosity: 30 mm2/s

These characteristics have been obtained by measuring on each valve.
Therefore, they may vary according to a hydraulic circuit to be used.
EDG-01-B

0.2s

3Step Signal

12516120.2s

8

Step Signal

4Time

7 10-10-20-30

Step Signal

1052040Time

Viscosity : 30 mm2/s

2570

Gain

EDG-01-H

20

Pressure MPa

Phase

Gain dB

Phase deg.

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

15■ Control Pressure vs. Input Current

Frequency Hz0.4 0.7 1420.220Time■ Frequency Response
0.1

EDG-01-H

30Pressure MPa

75EDG-01-C

20Pressure MPa

Pressure MPa

9Flow Rate: 2 L/min
Pressure:7.8 ± 1.6 MPa
Trapped Oil Volume : 30 cm3
Viscosity: 30 mm2/s

1510

EDG-01-C5■ Min. Adjustment Pressure
Min. Adjustment Pressure MPa

Viscosity : 30 mm2/s

03.0
2.5

200400600

EDG-01-H

2.0

EDG-01-C

1.5

EDG-01-B

1.00.5
12
Flow Rate L/min3■ Flow Rate vs. Pressure

Viscosity : 30 mm2/s■ Viscosity vs. Pressure

EDG-01-H

24.523.0

Pressure MPa

21.5

Pressure MPa0

Input Current mA0

EDG-01-C

16.0
15.5
14.0

5.5
4.0012

EDG-01-C

15.9
15.5
15.1

Temperature 30 35
Viscosity 68

Flow Rate L/minSeries
Pilot Relief Valves

Flow Rate : 2 L/min
Oil : ISO VG 46 Oil

EDG-01-H

24.9
24.5
24.1

EDG-01-B

7.4
7.0
6.6

EDG-01-B

7.0

H-96

EDG-01-B

40444550305560℃
21 mm2/s

800

1000

SERIES■ List of Seals and Solenoid Ass'y● Without Safety Valve

EDG-01＊-＊-PNT＊-51
EDG-01V-＊-PNT＊-5103

EDG-01-＊-PNT＊-5101

1221 16 2024213 18

35 22 15411 28

21176345117625 15● With Safety Valve

EDG-01＊-＊-1-PNT＊-51
EDG-01V-＊-1-PNT＊-5103
EDG-01V-＊-1-PNT20-5197
1319 10 14 27 26■ Pilot Valve
Model numbers of proportional electro-hydrauliccontrol valves whose pilot valve is this valve(EDG-01＊) and the pilot valve are shown.

254987● List of Seals
Item1415
16
1718
192021Name of Parts
O-RingO-RingO-RingO-RingO-RingO-RingO-RingFastener Seal

Part Numbers

OR NBR-70-1 P6-N
OR NBR-90 P9-N
OR NBR-90 P7-N
OR NBR-90 P14-N
OR NBR-90 P18-N
AS568-013(NBR-90)
OR NBR-90 P22-N
W4Qty.
121
1
111
3

Note: O-ring‌(Item 16, 18, 20) and the fastener seal (Item 21) are
included in the solenoid assembly.

● Solenoid Ass'y
Valve Model Numbers

EDG-01V-＊-＊-P＊T＊-51
EDG-01-＊-＊-P T -5101
EDG-01-＊-＊-P＊T＊-51
EDG-01V-＊-＊-PNT＊-5103⑬ Solenoid Ass'y
E318-Y06M1-28-61
E318-Y06M1-05-61
E318-Y06M1-04-61

Note: ‌The connector assembly GDM-211-B-11 (Item 12) is notincluded in the solenoid assembly.

Pilot Valve Model Numbers

EBG−03−C−51

EDG−01V−C−1−PNT09−51

EBG−03−H−51

EDG−01V−H−1−PNT09−51

EBG−03−C−T−51

EDG−01V−C−PNT09−51

EBG−03−H−T−51

EDG−01V−H−PNT09−51

EBG−06−C−51

EDG−01V−C−1−PNT10−51

EBG−06−H−51

EDG−01V−H−1−PNT10−51

EBG−06−C−T−51

EDG−01V−C−PNT10−51

EBG−06−H−T−51

EDG−01V−H−PNT10−51

EBG−10−C−51

EDG−01V−C−1−PNT11−5103

EBG−10−H−51

EDG−01V−H−1−PNT11−5103

EBG−10−C−T−51

EDG−01V−C−PNT11−5103

EBG−10−H−T−51

EDG−01V−H−PNT11−5103

ERBG−06−B−51

EDG−01−B−PNTN−5101

ERBG−06−C−51

EDG−01−C−PNTN−5101

ERBG−06−H−51

EDG−01−H−PNT15−5101

ERBG−10−B−51

EDG−01−B−PNTN−5101

ERBG−10−C−51

EDG−01−C−PNTN−5101

ERBG−10−H−51

EDG−01−H−PNT15−5101

EFBG−10−500−C−＊−51

EDG−01V−C−1−PNT12−5103

EFBG−10−500−H−＊−51

EDG−01V−H−1−PNT12−5103

EFBG−06−500−C−＊−51

EDG−01V−C−1−PNT11−5103

EFBG−06−500−H−＊−51

EDG−01V−H−1−PNT11−5103

EFBG−10−1000−C−＊−51

EDG−01V−C−1−PNT20−5197

EFBG−10−1000−H−＊−51

EDG−01V−H−1−PNT20−5197

Series
Pilot Relief Valves

E Series
Pilot Relief Valves

Valve Model No.

H-97

■ Interchangeability between Current and New Design

EDG-01 series valve has changed model from 50 to 51 design in line with the solenoid improvement.

● Specifications and Characteristics
Input current-pressure characteristics differ between current and new design. Please inquire separately for details.
Other specifications remain unchanged.
● Mounting Interchangeability
There is an interchangeability in the mounting dimensions, however, the outside shape and dimensions are changed asshown below due to solenoid improvement and other modifications.

Current: Design 50
191.5
26.5

Manual Pressure
Adj. Screw
3 Hex.Soc.

Solenoid Ass'y
1 E318- - -50
2 E318- - -60

Fully
Extended
52

Adaptor
22 Hex.

Fully Extended 217

Air Vent
3 Hex. Soc.
3 Places

The solenoid assembly current design comes in two types: 1 E318-50 design and 2 60 design.
See the figure on the left for an external view of type 1 . See the figure on the right for type 2 .

H-98

190.5
86.7

26.5

94.5

86.6

Manual Pressure
Adj. Screw
3 Hex.Soc.

94.5

Air Vent
3 Hex. Soc.

New: Design 51

Series
Pilot Relief Valves

Solenoid Ass'y
E318- - -61
Fully Extended 216

Fully
Extended52