1/12
Information on available spare parts:
www.boschrexroth.com/spc
4/2 and 4/3 directional shut-off
valves, internally pilot operated,
externally pilot operated
Types Z4WEH and Z4WH
Size 10
Component series 4X
Maximum operating pressure 315 bar
Maximum flow 160 l/min
RE 24753/08.08
Replaces: 04.93
Table of contents Features
Content Page
Features 1
Ordering code 2, 3
Mating connectors 3
Symbols 4, 5
Function, section 6, 7
Technical data 8
Characteristic curves 9
Unit dimensions 10, 11
Stroke adjustment, attachment options 12
– Directional spool valve, pilot operated
– 2 types of actuation:
• Electrohydraulic (type WEH)
• Hydraulic (type WH)
– Function as shut-off through-valve or shut-off/through valve/
short-circuit valve
– Free flow in P and T in every spool position
– Porting pattern to ISO 4401-05-04-0-05
– Wet-pin DC or AC voltage solenoids, optional
– Manual override, optional
– Electrical connection as individual or central connection,
see RE 23178 and RE 08010
– Switching time adjustment, optional
– Stroke adjustment of main spool, optional
– Inductive position switch and proximity sensors (contact-
less), see RE 24830
tb0255
Inhalt
Table of contents 1
Features 1
Ordering code 2
3
Mating connectors to DIN EN 175301-803 3
Symbols: Type Z4WEH (① = component side, ② = plate side) 4
Symbols: Type Z4WH (① = component side, ② = plate side) 5
Function, section: Type Z4WEH 6
Function, section: Type Z4WH 7
Technical data (for applications outside these parameters,
please consult us!) 8
Characteristic curves (measured with HLP46, ϑ
oil
= 40 °C ±5
°C) 9
Unit dimensions: Type Z4WEH10 (dimensions in mm) 10
Unit dimensions: Type Z4WH10 (dimensions in mm) 11
Stroke adjustment, attachment options (dimensions in mm) 12
Standard types and components are shown in
the EPS (standard price list).
2/12 Bosch Rexroth AG Hydraulics Z4WEH; Z4WH RE 24753/08.08
Ordering code
Types of actuation
Electrohydraulic = WEH
Hydraulic = WH
Size
NG10 = 10
Spool symbols, see pages 4 and 5
Component series 40 to 49 = 4X
(40 to 49: unchanged installation and connection dimensions)
Pilot valve
High-performance valve (RE 23178) = 6E
1)
DC voltage 24 V = G24
1)
AC voltage 230 V 50/60 Hz = W230
1)
DC voltage 205 V 50/60 Hz = G205
1; 2)
For further voltages, frequencies and electrical data, see data sheet RE 23178
Without manual override = No code
With manual override = N
1)
With concealed manual override (standard) = N9
1)
External pilot oil supply, external pilot oil drain
= No code
Internal pilot oil supply, internal pilot oil drain (standard) = ET
External pilot oil supply, internal pilot oil drain = T
(with type Z4WH… only “No code“ possible!)
Without switching time adjustment = No code
Switching time adjustment as meter-in control = S
Switching time adjustment as meter-out control = S2
1)
Only with electrohydraulic actuation, version “WEH“
2)
For connection to the AC voltage mains, a DC voltage sole-
noid must be used, which is to be controlled via a rectifier
(see table on the right-hand side).
In the case of individual connection, a mating connector
with integrated rectifier can be used (separate order, see
page 3).
3)
Mating connectors, separate order, see page 3.
4)
On version “D3“, a throttle insert “B08“ must be installed in
port P of the pilot valve!
Z4 10 4X
AC voltage mains
(permissible voltage
tolerance ±10%)
Nominal voltage of the
DC voltage solenoid
when operated
with AC voltage
Ordering
code
110 V - 50/60 Hz
120 V - 60 Hz
96 V
G96
230 V - 50/60 Hz 205 V G205
Hydraulics Bosch Rexroth AGRE 24753/08.08 Z4WEH; Z4WH
3/12
Further details in clear text
Seal material
No code = NBR seals
V = FKM seals
(other seals on request)
Attention!
Observe compatibility of seals with hydraulic fluid used!
No code = Without pressure reducing valve
D3
1; 4)
= With pressure reducing valve (to be used, if pilot pressure > 250 bar)
Throttle insert
1)
No code = Without throttle insert
B08 = Throttle Ø 0.8 mm
B10 = Throttle Ø 1.0 mm
Stroke adjustment
No code = Without stroke adjustment
10 = Stroke adjustment on sides A and B
11 = Stroke adjustment on side A
12 = Stroke adjustment on side B
For further details, see page 12
Without slash = No further details
/ = Further details
Spool position monitoring
No code = Without position switch
QMAG24 = Monitored spool position “a“
QMBG24 = Monitored spool position “b“
QMABG24 = Monitored spool positions “a“ and “b“
QM0G24 = Monitored rest position
For further details, see RE 24830
Electrical connection
1)
K4
3)
= Without mating connector, individual connection with component plug to DIN EN 175301-803
For further electrical connections, see RE 23178 and RE 08010
K4
*
Mating connectors to DIN EN 175301-803
For details
and further mating
connectors,
see RE 08006
Valve
side Color
Material no.
Without circuitry
With indicator lamp
12 … 240 V
With rectifier
12 … 240 V
With indicator lamp and
Zener-diode suppressor
circuit
24 V
a Gray R901017010 – – –
b Black R901017011 – – –
a/b Black – R901017022 R901017025 R901017026
4/12 Bosch Rexroth AG Hydraulics Z4WEH; Z4WH RE 24753/08.08
Symbols: Type Z4WEH (① = component side, ② = plate side)
Order-
ing code
Version
“ET“
Version
“T“
E62
1
2
TA TBPAB
X
ab
Y
1
2
TA TBPAB
X
ab
Y
E63
1
2
TA TBPAB
X
ab
Y
1
2
TA TBPAB
X
ab
Y
E68
1
2
TA TBPAB
X
ab
Y
1
2
TA TBPAB
X
ab
Y
E50
1)
1
2
TA TBPAB
X
ab
Y
1
2
TA TBPAB
X
ab
Y
E51
1
2
TA TBPAB
X
ab
Y
1
2
TA TBPAB
X
ab
Y
E52
2)
1
2
TA TBPAB
X
ab
Y
1
2
TA TBPAB
X
ab
Y
1)
Opening cross-section in spool position “a” (A2 → B2)
= 50 mm
2
2)
Opening cross-section in spool position “b” (A2 → B2)
= 35 mm
2
Hydraulics Bosch Rexroth AGRE 24753/08.08 Z4WEH; Z4WH
5/12
Symbols: Type Z4WH (① = component side, ② = plate side)
Order-
ing code
Version
“No code“
E62
1
2
TA TBPAB
X
a
b
Y
E63
1
2
TA TBPAB
X
a
b
Y
E68
1
2
TA TBPAB
X
a
b
Y
E50
1)
1
2
TA TBPAB
a
b
XY
E51
1
2
TA TBPAB
X
a
b
Y
E52
2)
1
2
TA TBPAB
X
a
b
Y
1)
Opening cross-section in spool position “a” (A2 → B2)
= 50 mm
2
2)
Opening cross-section in spool position “b” (A2 → B2)
= 35 mm
2
B
A
45
9
9
“b” “a”
A
1
2
A
2
B
B
1
2
TB
2
P
618
3.2
2
3.1
7
P
11
6/12 Bosch Rexroth AG Hydraulics Z4WEH; Z4WH RE 24753/08.08
Function, section: Type Z4WEH
Valves of type Z4WEH are directional spool valves with elec-
trohydraulic actuation. They control the start and stop of a
flow.
These directional valves basically consist of the main valve
with housing (1), main control spool (2), one or two return
springs (3.1 and 3.2), and pilot valve (4).
Main control spool (2) in the main valve is held by the springs
in the zero or initial position. In the initial position, the two
spring chambers (6) and (8) are connected pressureless to
tank via pilot valve (4). The pilot valve is supplied with pilot
oil via pilot channel (7). The pilot oil supply can be provided
internally or externally (externally via port X in the sandwich
plate, see page 10).
When the pilot valve is operated, e.g. solenoid “a“, pilot spool
(5) is pushed to the left, and consequently spring chamber (8)
is pressurized to pilot pressure. Spring chamber (6) remains
pressureless.
The pilot pressure acts on the left side of main control spool
(2) and pushes it against spring (3.1). As a result of this, the
connections on the component side and on the plate side are
opened according to the relevant symbols.
When the solenoid is de-energized, pilot spool (5) returns to
the initial position. Pressure chamber (8) is unloaded to the
tank.
The pilot oil is drained from spring chamber (8) internally via
pilot valve (4) into channel T (Y).
An optional manual override (9) allows pilot spool (5) to be
moved without energization of the solenoid.
Throttle insert
The use of throttle insert (11) is required, if the pilot oil supply
in channel P of the pilot valve is to be limited.
Throttle insert (11) is to be installed in channel P of the pilot
valve.
① = component side
② = plate side
A
1
2
A
2
B
B
1
2
TB
2
P
618
3.2
2
3.1
10
YX
Hydraulics Bosch Rexroth AGRE 24753/08.08 Z4WEH; Z4WH
7/12
Function, section: Type Z4WH
Valves of type Z4WH are directional spool valves with hy-
draulic actuation. They control the start and stop of a flow.
These directional valves basically consist of valve housing
(1), main control spool (2), one or two return springs (3.1) and
(3.2) in the case of valves with spring return or spring center-
ing, as well as pilot oil subplate (10).
Main control spool (2) is operated directly by pressurization.
Main control spool (2) is held by springs in the zero or initial
position. The pilot oil is supplied and drained externally (see
page 12).
8/12 Bosch Rexroth AG Hydraulics Z4WEH; Z4WH RE 24753/08.08
Technical data (for applications outside these parameters, please consult us!)
General
Weight – Valve with 1 solenoid kg 4.2
– Valve with 2 solenoids kg 4.6
– Valve with hydraulic actuation
(type 4WH…)
kg 3.5
– Switching time adjustment kg 0.8
– Pressure reducing valve kg 0.4
– Plate for version “T“ kg 0.5
Installation position Optional
Ambient temperature range °C –30 to +50 (NBR seals)
–20 to +50 (FKM seals)
Hydraulic
Maximum oper-
ating pressure
– Ports A and B bar 315
– Port P
External pilot oil supply bar 315
Internal pilot oil supply bar 250 (without pressure reducing valve)
315 (with pressure reducing valve)
– Port T
(Pilot oil drain only internal)
bar 210 (with DC solenoid)
160 (with AC solenoid)
Minimum pilot pressure bar 12
Maximum flow l/min 160
Pilot volume for operation cm
3
1.3
Hydraulic fluid
1)
Mineral oil (HL, HLP) to DIN 51524
2)
; fast bio-degradable
hydraulic fluids to VDMA 24568 (see also RE 90221); HETG
(rape seed oil)
2)
; HEPG (polyglycols)
3)
; HEES (synthetic
esters)
3)
; other hydraulic fluids on request
Hydraulic fluid temperature range °C –30 to +80 (NBR seals)
–20 to +80 (FKM seals)
Viscosity range mm
2
/s 2.8 to 500
Permissible max. degree of contamination of the
hydraulic fluid - cleanliness class to ISO 4406 (c)
Class 20/18/15
4)
Electrical
Switching time to
ISO 6403
at pilot pressure bar 70 140 210
~ = ~ = ~ =
– ON ms 30 65 25 60 20 55
– OFF ms 30
1)
The ignition temperature of the process and operating
medium used must be higher than the maximum solenoid
surface temperature.
2)
Suitable for NBR and FKM seals
3)
Suitable only for FKM seals
4)
The cleanliness classes specified for components must be
adhered to in hydraulic systems. Effective filtration prevents
malfunction and, at the same time, prolongs the service life
of components.
For the selection of filters, see data sheets RE 50070,
RE 50076, RE 50081, RE 50086, RE 50087 and RE 50088.
Notes!
– The manual override can only be actuated up to a tank
pressure of ca. 50 bar. Avoid damage to the bore for the
manual override! (Special tool for operation, separate or-
der, Material no. R900024943). When the manual override
is blocked, operation of the solenoids must be ruled out!
– The simultaneous operation of the solenoids must be ruled
out!
15
14
12
10
8
6
4
2
02040 10060 80 120 140 160
1234
5
Hydraulics Bosch Rexroth AGRE 24753/08.08 Z4WEH; Z4WH
9/12
Characteristic curves (measured with HLP46, ϑ
oil
= 40 °C ±5 °C)
Flow in l/min →
Pressure differential in bar →
∆p-q
V
characteristic curves
1 A1 → A2; B1 → B2
2 A2 → A1
3 A2 → B2
4 B2 → B1
5 B2 → A2
A B
A
B
P
T
206 (205)
F1
F2
F3
F4
P
B
TBTA
A
1
2
52,5
159
75,4 (74,4)
13
77,3
4 x M5; 10
G1/4
X
1520
40
94,715
51
“b” “a”
4 x Ø6,6
17
12 1
3
4
5
15
8
7
13
13
15
6
9 2 18
AB
30
3,5
14 (17)
11
10
14
10/12 Bosch Rexroth AG Hydraulics Z4WEH; Z4WH RE 24753/08.08
Unit dimensions: Type Z4WEH10 (dimensions in mm)
① component side - porting pattern
to ISO 4401-05-04-0-05
0,01/100
Rzmax 4
Required surface quality
of the valve mounting face
② plate side - porting pattern to
ISO 4401-05-04-0-05
0,01/100
Rz 20
Rz 12
Required surface quality
of the valve mounting face
For explanations of items, see page 11.
Hydraulics Bosch Rexroth AGRE 24753/08.08 Z4WEH; Z4WH
11/12
1 Nameplate of complete valve
2 Nameplate of pilot valve
3 Main valve
4 Sandwich plate for external pilot control (to be used at
operating pressure > 210 bar)
5 Pressure reducing valve “D3”
(must be used in the case of pilot pressures above
250 bar; only with version “Z4WEH“)
Material no.:
NBR seals: R900323180
FKM seals: R900323664
6 Space required to remove mating connector
7 Switching time adjustment (for throttle check valve, see
data sheet RE 27506); depending on the installation po-
sition, meter-in or meter-out control (illustration: meter-in
control)
8 R-ring plate
9 Pilot valve (see data sheet RE 23178)
– Type 4WE 6 J.. for symbol E62
– Type 4WE 6 Y.. for symbol E50, E51, E52, E63, E68
Dimensions () for valve with AC solenoid
Unit dimensions: Type Z4WH10 (dimensions in mm)
10 Dimension for valve without manual override
11 Dimension for valve with manual override “N“; dimen-
sions () for valve with AC solenoid
12 Dimension for valve with concealed manual override
“N9“; dimensions () for valve with AC solenoid without
manual override
13 Solenoids “a” and “b” (can be rotated 90°)
14 Identical seal rings for ports A, B, P, TA and TB
15 Identical seal rings for ports A, B, P and T
16 Pilot oil subplate
17 Valve mounting bores
Valve mounting screws (separate order)
4 hexagon socket head cap screws ISO 4762 - M6 - 10.9
18 Valve mounting screws (separate order)
4 hexagon socket head cap screws ISO 4762 - M5 - 10.9
Note!
The length and tightening torque of the valve mounting
screws must be calculated taking account of the components
mounted.
A
TA TB
AB
P
F1
F2
F3
F4
B
L1 L2
17 18
Bosch Rexroth AG
Hydraulics
Zum Eisengießer 1
97816 Lohr am Main, Germany
Phone +49 (0) 93 52 / 18-0
Fax +49 (0) 93 52 / 18-23 58
documentation@boschrexroth.de
www.boschrexroth.de
© This document, as well as the data, specifications and other informa-
tion set forth in it, are the exclusive property of Bosch Rexroth AG. It
may not be reproduced or given to third parties without its consent.
The data specified above only serve to describe the product. No state-
ments concerning a certain condition or suitability for a certain applica-
tion can be derived from our information. The information given does
not release the user from the obligation of own judgment and verifica-
tion. It must be remembered that our products are subject to a natural
process of wear and aging.
12/12 Bosch Rexroth AG Hydraulics Z4WEH; Z4WH RE 24753/08.08
Stroke adjustment, attachment options (dimensions in mm)
The stroke adjustment feature limits the stroke of the main
spool. The spool stroke can be reduced by loosening locknut
(17) and turning adjustment spindle (18) clockwise. The con-
trol chamber must be pressureless during this process.
Stroke 6 mm (1 turn = 1 mm stroke)
Attachment options Ordering
code
L1 L2
Stroke adjustment
on sides A and B
10 95 149
Stroke adjustment
on side A
11
95
Stroke adjustment
on side B
12 149
17 Locknut 27 A/F
18 Adjustment spindle, hexagon socket 5 A/F