FEATURES
- Electro-hydraulically operated by pilot valve NW6
- Flows up to 300l/min
- Internal or external pilot supply and drain line selectable
by internal plug setting
SPECIFICATIONS
Nominal pressure: max. 320 bar
Flow-rate: max. 300 l/min (P nach A, B, T)
Control pressure: min. 12 up to max. 280 bar
Pressure in line T: max. 140 bar
(with internal drain)
Pressure in line T: max. 250 bar
(with external drain)
Fluids: Hydraulic oil to DIN 51524 part 1 and 2
Media operating temp. range: -20°C up to max. +80°C
Ambient temperature range: -20°C up to max. +50°C
Viscosity range: 10 – 400 mm²/s is recommended
Filtration: ISO 4406 class 20/18/15
or better
Weight: 8,6 kg incl. pilot valve
Electrics
Type of voltage: DC
Vol
tage tolerance: ±10%
Nominal power: 30W (12V / 2,5A) resp. 32W (24V /1,33A)
Switch-on time: Main stage: 45 ms up to 75 ms
Switch-off time: Main stage: 30 ms up to 60 ms
(Control pressure 100bar)
Coil duty rating: 100%
Electrical connection: plug according to DIN 43650
IP rating: IP 65 nach EN 60529; DIN 40050
with correctly fitted connector
4/3-Directional control valve
electro-hydraulically operated
4WEH I 16 / 4WEH EI 16
B A
SYMBOL
E
H
J
G
EA
D
D/
OF
bis 320 bar
bis 300 l/min
FUNKTION
E 5.227.1.0 /08.10
710
PERFORMANCE
(X: plug M6x8 for external controls
Y: plug M6x8 for external drain)
Symbol piston position Ports
P -> A P -> B A -> T B -> T
E not operated
operated 1 1 3 4
H not operated
operated 1 1 4 4
J not operated
operated 1 1 4 4
G not operated
operated 2 2 4 5
Q not operated
operated 1 1 3 4
EA not operated
operated - 1 3 -
HA not operated
operated - 1 4 -
JA not operated
operated - 1 4 -
GA not operated
operated 2 - - 5
D not operated
operated 1 1 3 4
D/OF operated 1 1 3 4
Cross section for plug setting
Valve type Plug setting
X Y
Internal pilot supply and no plug plug
external drain
I Internal pilot supply and no plug no plug
drain
external pilot supply and plug plug
drain
EI external pilot supply and plug no plug
internal drain
4/2 directional valve
with spring offset Type 4WEH 10, 16
4/3 directional valve
spring centered Type 4WEH 10, 16
4/2 directional valve
with spring offset Type 4WEH 10, 16
Main
stage
Pilot D
(rotated
assembly)
Main
Valve
plus pilot
P T
a
A B
TP
x
a
y
b
P T
b
A
B
X = extern
Y = extern
X = extern
Y = extern
X = extern
Y = extern
P T
a
A B
TP
x
a
y
b
P T
b
0
A
B
P T
a
A B
TP
x
a
y
b
P T
b
0
A
B
A B
TPX
Y
a
b
A B
TPX Y
a
b
0
A B
TPX
Y
a
b
0
Main
stage
Pilot J
(rotated
assembly)
Main
Valve
plus pilot
Main
stage
Pilot JA
(rotated
assembly)
Main
Valve
plus pilot
711
Symbol PA PB
E 1 1
H
1 1
J 1 1
G 2 2
Q 1 1
D 1 1
MODEL CODE
4WEH I 16 E S01 –24DG / V
Name
4/2- resp. 4/3-directional spool valve
with pilot spool valve
Pilot supply and drain
I = internal pilot supply and drain
EI = External pilot supply and internal drain
Nominal size
16 = NW 16
Symbol
Available Symbols: E, J, G, H, Q, QA, HA, GA,
JA, D, EA, D-OF
Types
S01 = Standard
Nominal voltage and plug
12 = 12 Volt DC
24 = 24 Volt DC
DG: DIN plug according to EN 175301-803
DO: M12x1 plug
Seals
V = Viton (Standard)
N = NBR
Standard models Part no.
types on request
Range
Electro-hydraulic pilot control
FUNCTI
ON
HYDAC 4/2 und 4/3 directional valves for oil hydraulic systems
are to open and close flow paths. In de-energized mode the
main piston will be retained by a spring in the initial position.
An under oil switching magnet pushes the pilot piston in its
end position whereby the main piston – hydraulically operated
– moves to his end position.
Hereby the chosen flow paths will be enabled according to the
symbol of the valve. After switching-off the solenoid the pilot
piston will be pushed back in its initial position by the spring. A
manual override allow the switching of the pilot valve without
erection of the solenoid.
Flow loss of the valve in central position
Direction of flow
Curves
712
Hole pattern according to ISO 4401-07-06-0-94
DIMENSIONS
1) Fixing plate with O-rings
2) Manual override
3) Space for mounting the coil
4) Space for mounting the plugs
5) DIN plug (optional)
6) Pressure relief valve
Fixing screws
4x M10 x 60 DIN 912-12.9 Torque 67 +5
Nm 2x M6 x 50 DIN 912-12.9
Torque 14 +1 Nm
O-rings hole pattern
4x O-Ring 22,22 x 2,62 – 90 Sh
2x O-Ring 10,82 x 1,78 – 90 Sh
All dimensions in mm.
Fixing elements are not in the scope of
supply .
Fixing plate
Do not design port
L for standard
valves, no sealing
on valve side!
HYDAC Fluidtechnik GmbH
Just
us-von-Liebig-Str. 5
66280 Sulzbach / Saar
Tel.: 06897 / 509 -0
Fax: 06897 / 509 -598
Email: flutec@hydac.com
Annotation
The technical information in this
brochure are relating to the operating
conditions and applications.
At deviant applications and/or
operating conditions please contact
the technical dept.
Technical information are
subject to technical modifications.
713
