RE 18301-36/01.2025, Bosch Rexroth AG
4/3 and 4/2 Proportional directional valve elements
EDH
RE 18301-36
Edition: 01.2025
Replaces: 07.12
4/3 and 4/2 Proportional directional valve elements
with LS - Electrohydraulic actuation
RE 18301-36
Edition: 01.2025
Replaces: 06.2024
General specifi cations
The inlet section can be confi gured for either a fi xed
displacement pump or load-sense variable displacement
pump. When simultaneous machine functions are actuated,
the pre-compensators will automatically adjust to the
highest load pressure via a shuttle arrangement, making the
system circuit independent of variations in loads and pump
pressures. Thanks to modularity concept, it's possible to
combine stacks of fl exible sections across the entire EDH
family; this enables to build up a valve group that meets
specifi c requirements.
Furthermore: compactness, power density and energy
effi ciency thanks to low Dp complete the best in class
performance.
Main Fields of Application
▶ Truck mounted applications
▶ Forestry machinery
▶ Forklifts and Telehandler
▶ Municipal vehicles
▶ Cranes
▶ Construction machines
▶ Mobile elevating working platforms
▶ Heavy duty vehicles
▶ Agricultural machines
▶ Size 10
▶ Maximum operating pressure: up to 350 bar (5000 psi)*
▶ Maximum fl ow at 8 bar bias spring (116 psi):
100 l/min (26.4 gpm)
▶ Ports connections: G 1/2 - SAE10
▶ C-Samples available
Contents
Ordering details 2
Hydraulic layouts 4
Functional description 5
Technical data 6
Characteristic curves 7
External dimensions and fi ttings:
- Standard version 8
- Horizontal emergency lever option (H) 9
- Vertical emergency lever option (V) 10
- LS signal management option 11
- Spool sensor option 12
- Electric connections 13
EDH
Note
Spool position sensor available for this valve.
See RE18300-30
* For detailed information about duty cycles or specifi c
requirements please contact factory.
Bosch Rexroth AG, RE 18301-36/01.2025
2 EDH | 4/3 and 4/2 Proportional directional valve elements
Ordering details
Ordering details
00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18
EDH-P-_-_-0-_ __ _ _ _ -_ _ _ _-_ _-_ _ _ _-_-_-_ _-_
Family
00 Directional Valve elements EDH Size 10 proportional EDH
Type
01 Electro - Piloted P
Flange (defi ne the following directional valve)
02 EDH H
EDG G
1)
Ports & Connections
03 G 1/2 DIN 3852 4
7/8-14 UNF (SAE10) D
Local compensator bias spring
04 8 bar (116 psi) 0
Hydraulic connections in neutral
05 P, A, B closed LS to T B
P closed A, B, LS to T E
Spool variants
06 4/3 operated both sides a and b 2
4/2 operated sides a 3
4/2 operated sides b 4
Flow rates over valve connection (according to table 1)
07 Flow rate P>A -
Flow rate P>B -
Nominal fl ow rate (A>T) -
Nominal fl ow rate (B>T) -
Voltage supply 01 03 07
08 12V DC ● ● ● OB
24V DC ● ● ● OC
● = Available – = Not available
Electric connections
2)
09 With coils, with connection DIN EN 175301-803 01
2)
With coils, with connection vertical Amp - Junior 03
With coils, with connection DT04-4P 07
Secondary valve types
10 Without secondary valve 00
Double or single full relief valve with Anticavitation
(VMA) or anticavitation only (VUM) or plug
M0
4)
Double or single LS relief valve (VMGLS) or plug 0M
Combination of M0 and 0M options together MM
Secondary valve confi g. setting:
Full Relief or Anticavitation selection (according to table 2)
11 A>Ta setting @5lpm _
3)
12 B>Tb setting @5lpm _
3)
Secondary valve confi g. setting: LS Relief (VMGLS)
(according to table 3)
13 LSA>T setting range @1.5lpm _
14 LSB>T setting range @1.5lpm _
Auxiliary ports on LSA and LSB
15 Cavity not drilled / No option 0
Both LSA and LSB G 1/8 DIN 3852 1
Emergency lever
16 No option 0
Lever type manual override on A side – Horizontal H
6)
Lever type manual override on A side – Vertical V
6)
Prepared for lever type manual override
on A side – stroke limitator
X
1) For combined valve blocks EDH+EDG the last EDH section must be
selected with fl ange "G"
2) For mating connectors ordering code see data sheet RE 18325-90.
3) "0" option is the only one available for "without secondary valves"
selection.
4) For fi xed setting relief valve data sheet see Data Sheet RE 18329-12.
For anticavitation valve data sheet see Data Sheet RE 18329-52.
5) For pressure rating selection refer to table 4.
6) The Spool Sensor option is not available in combination with the
emergency lever.
7) Electric connection of LS signal management cartridge valve in
accordance with fi eld "09".
LS signal management
7)
17 No option 00
LS cut-off - 2/2 cartridge valve normally open KKDER8 P
rif. RE18136-08
NO
LS cut-off - 2/2 cartridge valve normally closed KKDER8 N
rif. RE18136-08
NC
LS pressure control - Proportional pressure relief valve,
increasing characteristic curve KBPS.8A rif. RE18139-04
A_
5)
LS pressure control - Proportional pressure relief valve,
decreasing characteristic curve KBPS.8B rif. RE18139-05
B_
5)
Spool sensor
18 No option 0
Spool sensor on side "A" S
6)
RE 18301-36/01.2025, Bosch Rexroth AG
4/3 and 4/2 Proportional directional valve elements | EDH
Ordering details
3
Ordering details
Table 1
Spool Variant* Nominal fl ow rate
5555 80 lpm
9999 100 lpm
* Other variants available on request
Table 4
Pressure rating Pressure range selection
up to 30 bar B
up to 50 bar C
up to 100 bar F
up to 150 bar H
up to 210 bar L
up to 250 bar N
up to 315 bar P
up to 350 bar R
Table 3
LS relief valve confi guration setting
Option
selection
Description Standard
setting (bar)
0 without valve cavity -
1 30-90 bar (Setting range) 70
2 80-140 bar (Setting range) 110
3 135-225 bar (Setting range) 180
4 210-310 bar (Setting range) 250
5 290-380 bar (Setting range) 300
9 Normally closed plug R930082023
ABCDEFGHI J
30
bar
50
bar
60
bar
80
bar
100
bar
120
bar
140
bar
150
bar
160
bar
170
bar
435
psi
725
psi
870
psi
1160
psi
1450
psi
1740
psi
2030
psi
2175
psi
2321
psi
2466
psi
KL MNOP QRS T
180
bar
190
bar
200
bar
210
bar
220
bar
230
bar
240
bar
250
bar
260
bar
270
bar
2611
psi
2756
psi
2901
psi
3046
psi
3191
psi
3336
psi
3481
psi
3626
psi
3771
psi
3916
psi
UVWXY Z
280
bar
300
bar
310
bar
320
bar
350
bar
380
bar
4061
psi
4351
psi
4496
psi
4641
psi
5076
psi
5511
psi
Table 2
Full relief valve confi guration setting
098
Without valve cavity
on both sides
(not drilled)
With valve cavity
plugged (Normally
closed plug)
R930080486
With anti-cavitation
valve
R901109792
Bosch Rexroth AG, RE 18301-36/01.2025
4 EDH | 4/3 and 4/2 Proportional directional valve elements
Hydraulic layouts
Hydraulic layouts
Standard version fl ange H
00
No secondary valves
NO
LS cut-off - 2/2 cartridge valve
normally open
KKDER8 P rif. RE18136-08
NC
LS cut-off - 2/2 cartridge valve
normally closed
KKDER8 N rif. RE18136-08
Ax
LS pressure control
Proportional pressure relief
valve increasing curve
Bx
LS pressure control
Proportional pressure relief
valve decreasing curve
10 - Secondary valve types
17 - LS signal management
0M
LS relief valve option
M0
Relief valves with
anticavitation option
M0
Anticavitation
valves option
MM
Combination of
M0 and M0 option
Standard version fl ange G
B2
B3
B4
E3
E4
E2
06 - Spool variants
Both meter in and out
RE 18301-36/01.2025, Bosch Rexroth AG
4/3 and 4/2 Proportional directional valve elements | EDH
Functional description
5
Functional description
The EDH pilot operated proportional sectional valves with
pressure compensation control the oil fl ow to actuators.
These elements consist of a stackable housing (1) with a
control spool (2), a piloting module (4), one return spring
(3). The piloting module (4), energized by PWM regulator,
displaces the control spool from its neutral-central position
“0” proportionally to the current received. When the spool
is shifted and the metering notch is open, fl ow delivery
starts and is controlled by a 2 way pressure compensator
(6) (P > A; P > B).
When the pilot module is de-energized, the return spring
pushes the spool back in its neutral-central position.
Load pressure compensation
The pressure compensator (6) keeps the pressure
diff erential on the main spool (2). The fl ow to the
consumers remains constant, despite varying loads. The
highest load pressure on the pump is signaled via the LS
line and the integrated shuttle valve (5).
Port relief valves with anti-cavitation function on A and B
(8) protect the system against pressure peaks and
cavitation. LS relief valves (7), for each consumer port, can
be adjusted according to specifi c application requirements.
1 Housing
2 Main spool
3 Return Spring
4 Piloting module
5 LS shuttle valve
6 Compensator spool
7 LS relief valve (VMGLS)
8 Secondary valve with
anticavitation option
1
46
78
5
23
Bosch Rexroth AG, RE 18301-36/01.2025
6 EDH | 4/3 and 4/2 Proportional directional valve elements
Technical data
Technical data
General
Valve element kg (lbs) 3.8 (8.35)
Ambient Temperature °C (°F) -30...+80 (-22...+176)
Body valve zinc plating treatment for higher corrosion
resistance protection
h up to 500
Hydraulic
Maximum pressure at P, A and B ports bar (psi) 350 (5000)
1)
Maximum static pressure at T bar (psi) 30 (435)
Max. regulated fl ow at 8 bar (116 psi) l/min (gpm) 100 (26.4)
For E schemes symmetrical spool pattern in neutral
position (connection A to T and B to T).
Approx. 3% of the nominal cross-section
Hydraulic fl uid
General properties: it must have physical lubricating
and chemical properties suitable for use in hydraulic
systems.
Mineral oil based hydraulic fl uids HL (DIN 51524 part 1).
Mineral oil based hydraulic fl uids HLP (DIN 51524 part 2).
For use of environmentally acceptable fl uids (vegetable or
polyglycol base) please consult us.
Fluid Temperature °C (°F) -30....+100 (-22....+212) (NBR seals)
Permissible degree of fl uid contamination ISO 4572: β
x
≥75 X=12...15
ISO 4406: class 20/18/15
NAS 1638: class 9
Viscosity range mm
2
/s 20....380 (optimal 30....46)
Electrical
Voltage type PWM 200 Hz
Voltage tolerance (nominal voltage) % -10 .... +10
Insulation class F
Compliance with Low Voltage Directive LVD 73/23/EC (2006/95/EC), 2004/108/EC
Pilot module weight kg (lbs) 0.15 (0.33)
Voltage V 12 24
Nominal 100% current A 1.26 0.63
Nominal Coil Resistance at 20°C (68°F) Ω 6.3 27
Note
1)
For detailed information about duty cycles or specifi c
requirements please contact factory.
RE 18301-36/01.2025, Bosch Rexroth AG
4/3 and 4/2 Proportional directional valve elements | EDH
Characteristic curves
7
Characteristic curves
Measured with hydraulic fl uid ISO-VG32 at 45° ±5°C (113° ±9°F); ambient temperature 20°C (68°F).
Characteristic curves Q=Q(I)
Characteristic curves Q=Q(A)
2-way infl ow controller
spool type B29999
E29999
spool type B25555
E25555
spool type B29999 @ 100%A
E29999 @ 100%A
spool type B25555 @ 100%A
E25555 @ 100%A
Bosch Rexroth AG, RE 18301-36/01.2025
8 EDH | 4/3 and 4/2 Proportional directional valve elements
External dimensions and fi ttings - Standard version
Dimensions: mm [inches]
External dimensions and fi ttings - Standard version
1 Identification label.
2 Flange specifications. For tie rod and tightening torque information see data sheet RE 18301-92.
Port A
Port B
1
2
RE 18301-36/01.2025, Bosch Rexroth AG
4/3 and 4/2 Proportional directional valve elements | EDH
External dimensions and fi ttings - Horizontal emergency lever option (H)
9
Dimensions: mm [inches]
External dimensions and fi ttings - Horizontal emergency lever option (H)
Port A
Port B
Bosch Rexroth AG, RE 18301-36/01.2025
10 EDH | 4/3 and 4/2 Proportional directional valve elements
External dimensions and fi ttings - Vertical emergency lever option (V)
Dimensions: mm [inches]
External dimensions and fi ttings - Vertical emergency lever option (V)
Port A
Port B
RE 18301-36/01.2025, Bosch Rexroth AG
4/3 and 4/2 Proportional directional valve elements | EDH
External dimensions and fi ttings - LS signal management option
11
Dimensions: mm [inches]
External dimensions and fi ttings - LS signal management option
Port A
Port B
Bosch Rexroth AG, RE 18301-36/01.2025
12 EDH | 4/3 and 4/2 Proportional directional valve elements
External dimensions and fi ttings - Spool sensor option
Dimensions: mm [inches]
External dimensions and fi ttings - Spool sensor option
Port A
Port B
RE 18301-36/01.2025, Bosch Rexroth AG
4/3 and 4/2 Proportional directional valve elements | EDH
Electric connections
13
Dimensions: mm [inches]
Electric connections
COIL 2 COIL 1
COIL 2 COIL 1
COIL 2 COIL 1
01
Protection class: IP 67 when connector with seal is properly
screwed down
03
Protection class: IP 67 with female connector properly fi tted
(see drawing).
07
Protection class: IP 67 with female connector properly fi tted
(see drawing).
ELECTRIC ACTIVATION
All the modules have the same electric activation concept:
By energizing the coil 1 the main spool is piloted on B side and realizes
the hydraulic connections P>A B>T.
By energizing the coil 2 the main spool is piloted on A side and realizes
the hydraulic connections P>B A>T.
The physical position of the coils is the same for all the connector types
as per the picture below
COIL 2
COIL 1
14
Bosch Rexroth AG, RE 18301-36/01.2025
Bosch Rexroth Oil Control S.p.A.
Oleodinamica LC Division
Via Artigianale Sedrio, 12
42030 Vezzano sul Crostolo
Reggio Emilia - Italy
Tel. +39 0522 601 801
Fax +39 0522 606 226 / 601 802
compact-hydraulics-cdv@boschrexroth.com
www.boschrexroth.com/compacthydraulics
© This document, as well as the data, specifi cations and other information
set forth in it, are the exclusive property of Bosch Rexroth Oil Control S.p.a..
It may not be reproduced or given to third parties without its consent.
The data specifi ed above only serve to describe the product. No statements
concerning a certain condition or suitability for a certain application can be
derived from our information. The information given does not release the
user from the obligation of own judgment and verifi cation. It must be
remembered that our products are subject to a natural process of wear and
aging.
Subject to change.
EDH | 4/3 and 4/2 Proportional directional valve elements
