EN 5.244.4.0/11.19
1
4/2 and 4/3 directional spool valve
solenoid-operated, direct-acting
soft-shift
4WEW 10
DESCRIPTION
HYDAC 4/2 and 4/3 directional spool
valves of the 4WEW 10 series are
directional valves which are designed to
open and close ow paths in oil-hydraulic
systems. The valve operates by an oil-
immersed solenoid. During this process,
the solenoid pushes the valve’s control
spool into the position which will obtain the
desired ow path.
An orice in the magnetic spool and
special valve spools with ne control
grooves work together to dampen the
movement and a soft shifting process.
Nominal size 10
up to 160 l/min
up to 320 bar
CONTENTS
Description 1
Features 1
Model code 2
Spool types / symbols 3
Function 4
Section view 4
Technical data 4
Performance 5
Dimensions 6
Electrical connections 7
Manual overrides 7
Accessories 8
FEATURES
z Direct-acting, solenoid-operated spool valve
z Interface according to DIN 24340 Form A10, ISO 4401-05
z Removable, high-performance solenoid coil, no need to open the
hydraulic system during replacement
z Coil rotatable by 360°, allows exible installation
z Electrical connection in several versions available
z Soft-shift process reduces shocks in hydraulic systems
z With concealed manual override, additional versions available
EN 5.244.4.0/11.19
2
MODEL CODE
4WEW 10 E A01 – 24 D G /V
_
Type
Solenoid-operated directional valve with 4 main ports, soft-shift
Nominal size
10
Spool symbol
See page 3
Series
A01 = specied by the manufacturer
Rated voltage of the solenoid coil
1)
24 = 24 VDC
* only in combination with the electrical connection G
Type of voltage
D = DC voltage
Electrical connection (for details, see page 7)
1)
G = device connector, DIN EN 175301-803 A
Material of seal
/N = NBR
/V = FKM
Manual override (for details, see page 7)
Not specied = with concealed manual override (standard)
/M1 = with manual override
/M4 = with knurled nut
1)
Other models on request
EN 5.244.4.0/11.19
3
SPOOL TYPES / SYMBOLS
4/2 DIRECTIONAL SPOOL VALVES
Type Basic symbol With
intermediate position
D
T
A
P
B
a
T
A
B
a
HA
T
A
P
B
a
T
A
P
B
a
JA
A
B
a
T
P
T
A
B
a
4/3 DIRECTIONAL SPOOL VALVES
Type Basic symbol With
intermediate position
E
T
A
P
B
a
b
T
A
P
B
a
b
H
T
P
a
b
A
B
T
A
P
B
a
b
J
T
A
P
B
a
b
T
A
P
B
a
b
EN 5.244.4.0/11.19
4
FUNCTION
The solenoid-operated directional spool
valves of the 4WEW 10 type are used to
control nominal ow and consist of one
valve casing (1) with an associated valve
spool (2). Depending on the type, each
valve is equipped with at least two return
springs (3) and one or two pole tubes (4)
and solenoid coils (5).
The valve is hydraulically controlled
by solenoids (5) which operate the
valve spool. A solenoid is a converter
which converts electrical energy into
mechanical energy. In this process,
the energised solenoid causes the oil-
immersed magnetic spool (6) to make
a linear stroke movement. The solenoid
uses the guide rod (7) to move the
valve spool into the desired position.
This causes the nominal ow directions
between the respective ports to be
released or closed.
An orice in the magnetic spool and ne
control grooves in the valve spool work
together to slow down the switching
process and lessen pressure drops.
This signicantly reduces shocks in the
hydraulic system.
To obtain the valves’ optimum switching
capacity, the pole tube's pressure-tight
chamber should always be vented and
lled with oil.
If the solenoid has been de-energised,
the valve spool is pushed back into
the starting position by the appropriate
return spring
The manual override (8) enables
valve operation without energising the
solenoid.
TECHNICAL DATA
General specications
MTTF
d
: According to EN ISO 13849-1:2015
Tables C1 & C2
Ambient temperature range: [°C] -20 to +60
Installation position: No orientation restrictions
Weight: [kg] 4.0 with one solenoid;
6.0 with two solenoids
Material: Valve casing: Cast iron
Pole tube: Steel
Coil casing: Steel
Name plate: Aluminium
Surface coating: Valve casing: Phosphate plated
Pole tube: Zn coating
Coil casing: ZnNi coating
Hydraulic specications
Operating pressure: [bar] Port A, B, P: p
max
= 320
Port T: p
max
= 210
Nominal ow: [l/min] See performance limits on page 5
Operating uid: Hydraulic oil to DIN 51524 Part 1, 2 and 3
Media operating temperature range: [°C] -20 to +80
Viscosity range: [mm²/s] 15 to 400
Permitted contamination level
of operating uid:
Class 20/18/15 according to ISO 4406
Max. switching frequency: [1/h] 7,000
Manual override: Up to approx. 50 bar tank pressure available
Sealing material: FKM (standard), NBR
Electrical specications
Response time: [ms] Response times highly dependent on
viscosity, pressure and application
(see sample curves, page 5)
Type of voltage: DC
Rated voltage: [V] 24
Voltage tolerance: [%] ±10
Nominal power: [W] 38
Duty cycle: [%] 100
Max. surface temperature of the coil: [°C] 150
Protection class according to DIN EN 60529: With electrical connection “G” IP65
2
1
see “Conditions and Instructions for Valves” in brochure 53.000
2
If installed correctly
SECTION VIEW
1
EN 5.244.4.0/11.19
5
PERFORMANCE
Pressure drop
measured at ν = 46 mm²/s, T = 40 °C
Pressure drop Δp [bar]
Flow rate Q [l/min]
Performance limits
measured at ν = 46 mm²/s, T = 40 °C
Pressure p [bar]
Flow rate Q [l/min]
Sample curves
Measured with ow from both sides
(e.g. P → A and B → T)
Measured at symbol E at ν = 46 mm²/s, T = 40 °C
Pressure p [bar], voltage [V]
Time [ms]
Performance assignment to the associated spools:
Spool Pressure drop Performance
limits
P→A B→T P→B A→T P→T
D 4 4 4 4 – 2
E 3 3 3 3 – 1
H, HA 1 3 1 3 5 2
J, JA 3 2 3 2 – 1
The performance limits were calculated with solenoids at
operating temperature and 10% low voltage.
The specied performance limits are applicable for operation
with two nominal ow directions.
If there is only one nominal ow direction, the power limits
may be lower.
Standard valve
Soft-shift valve
Voltage signal
EN 5.244.4.0/11.19
6
Mounting screws:
(not included in delivery)
DIN EN ISO 4762 – M6 x 40 – 10.9
Tightening torque: 10 Nm
Solenoid a
Solenoid a Solenoid b
optional
DIMENSIONS
With two solenoids
With one solenoid
Interface
ISO 4401-05-04-0-05 (CETOP 5)
Clamping length
Manual
override
EN 5.244.4.0/11.19
7
ELECTRICAL CONNECTIONS
G
Device
connector
DIN EN
175301-803 A
z IP65
Other models on request
MANUAL OVERRIDES
Standard
with
concealed
manual
override
102,2*
5,5
Operation
with tool
M4
with
knurled-
head
screw
149,5*
Operation by
turning the
knurled-head
screw
* Dimensions up to valve casing
The valve can also be operated manually. There are f manual
overrides available for this purpose.
The tank pressure should not exceed 50 bar. If the tank
pressure is higher, the force required to operate the manual
override increases accordingly.
For valves with two solenoids, simultaneous operation of both
manual overrides is prohibited.
EN 5.244.4.0/11.19
8
HYDAC Fluidtechnik GmbH
Justus-von-Liebig-Str.
D-66280 Sulzbach/Saar
Tel.: 0 68 97 /509-01
Fax: 0 68 97 /509-598
E-mail: valves@hydac.com
Note
The information in this brochure
relates to the operating conditions and
applications described. For applications
not described, please contact the
relevant technical department.
All technical details are subject to
change without notice.
ACCESSORIES
Designation Part no.
Seal kits (4-part set)
12.42 x 1.78-NBR -80Sh 4348706
12.4 2x 1.78-FKM -80Sh 4348705
Mounting screws (4 pcs) DIN EN ISO 4762 - M6 x 40 - 10.9 3524314
Solenoid coils COIL 24DG -75-3164 38W 4251230
Seal kit for solenoid coil Nut open, O-ring 4348711
Connector
Z4 standard 2-pole without PE 394287
ZW4 incl. rectier 394293
Z4L incl. LED 394285