Solenoid Operated Spool Valve, ISO size 3
Direct Acting
Series WEDL ...
Reference: 400--P--181260--EN--/09.15
1/4
430.20.60.63
Replaces: W--16.30
Classification:
S 160 bar, 40 l/min
S ”Low Watt” model (8W)
S Solenoid design features slip --on co-
ils, which enables straightforward coil
changes without opening the hydrau-
lic envelope
S Low--cost design for operation up to
40 l/min and 160 bar
S With ISO 4401 / CETOP R35H size 3,
NFPA D03, DIN 24 340 A6 interface
1. Description
Series WEDL...--6 units are solenoid op-
erated directional spool valves. They
are used to start and stop the flow of
fluid in hydraulic systems, and to con-
trol the direction of flow. The spool is
actuated by low--wattage solenoids
(8W) that can only be supplied for 24
VDC (direct current) systems. The sole-
noid coils can be rotated on the core
tube and secured at 90° intervals. The
valves are used wherever there is a
need for the lowest possible current
consumption, or in applications where
the solenoid is energised directly (with-
out a relay) by the output of a PLC (pro-
grammable logic controller).
2. Symbols
1
4/2 FUNCTIONS
4/2 FUNCTIONS
WITH 4/3 SPOOLS
4/2 FUNCTIONS
WITH 4/3 SPOOLS
4/3 FUNCTIONS
W E D L -- 4 2 -- A -- 6
W E D S -- 4 2 -- A D -- 6
W E D S -- 4 2 -- A G -- 6
W E D S -- 4 2 -- B D -- 6
W E D S -- 4 2 -- B G -- 6
W E D L -- 4 3 -- D -- 6
W E D L -- 4 3 -- G -- 6
PT
a
AB
PT
b
AB
PT
a
AB
PT
b
AB
PT
a
W E D S -- 4 2 -- B -- 6
A
B
PT
a
AB
PT
b
A
B
PT
a
W E D S -- 4 2 -- A H -- 6 W E D S -- 4 2 -- B H -- 6 W E D L -- 4 3 -- H -- 6
AB
PT
a
AB
PT
b
AB
PT
b
a
W E D S -- 4 2 -- A J -- 6 W E D S -- 4 2 -- B J -- 6
A
B
PT
a
AB
PT
b
Transient crossover connections
2
3
4
6
8
7
9
10
12
16
18
22
24
14
15
20
21
13 19
b
b
51117 23
W E D S -- 4 2 -- A G G -- 6 W E D S -- 4 2 -- B G G -- 6
AB
PT
a
A
B
PT
b
W E D S -- 4 2 -- A N -- 6
AB
PT
a
AB
b
W E D S -- 4 2 -- B N -- 6
W E D S -- 4 2 -- C -- 6
AB
PT
b
a
A
B
PT
W E D L -- 4 3 -- J -- 6
AB
PT
b
a
W E D L -- 4 3 -- G G -- 6
AB
PT
a b
400--P--181260--EN--/09.15
2/ 4
3. Main characteristics
Designation 4/2 and 4/3 directional spool valve
Design direct acting
Mounting method manifold mounting
Size nominal size 6 mm, ISO 4401 size 3 interface
Weight kg 1 solenoid = 1,6 2 solenoids = 2,2
Mounting attitude unrestricted
Flow direction see symbols
Operating pressure bar max. 160 in P, A and B
Operating pressure in T (static) bar max. 210
Flow rate, Q max. l/min 40
Fluids HL and HLP hydraulic oils to DIN 5 1 524 /
water-- in --oil emulsions / water glycols /
phosphate esters (not Alkyl--based);
for other fluids, please consult BUCHER
Fluid temperature range _C mineral oils: --25 ... +80
water-- containig fluids: +10 ... +54
Ambient temperature _C --25 ... +50
Viscosity range mm
2
/s (cSt) 10 ... 500, recommended 15 ... 250
Minimum fluid cleanliness level 18/14 to ISO 4406 / CETOP RP70H; 8 ... 9 to NAS 1638
Nominal voltages VDC 24
Nominal voltage tolerance % +5 / --10
Nominal power consumption VDC W at 20°C and nominal voltage: 8
Relative duty cycle % 100
Enclosure protection IP 65 to DIN 40 050
Electrical connection 3-- pin square plug to ISO 4400 / DIN 43 650
4. Performance graphs
Measured with oil viscosity 36 mm
2
/s (cSt) coil at s teady-- state temperature, 10% under--voltage
DD
Application limits
Valves with DC solenoids
5
2
15 20 25 30 35 40
4
6
8
10
D
A
GH
J
2
1
3
4
6
7
5
GG
6
6
-- --
5
5
5
5
-- --
2
2
-- --
-- --
-- --
3
3
6
6
-- --
1
1
-- --
-- --
-- --
8
8
5
5
-- --
2
2
4
4
-- --
2
2
7
7
3
5
5
D
A
GH
J
GG
113 2
14
1
3
5
7
20
120
140
160
5 15202530354010
1
3
4
2
100
40
60
80
45 ms 28 ms
4
5
20
15 20
40
60
80
10
10
30
50
70
90
100
8
Aclosed
Bclosed
A+Bclosed
DC solenoids
ON OFF
P ⇒ A
P ⇒ B
P ⇒ T
A ⇒ T
B ⇒ T
→∆p(bar)
→ Q(l/min)
→∆p(bar)
→∆p(bar)
→ Q(l/min)
→ Q(l/min)
∆p -- Q characteristic
Spool type
Spool type
solenoid deenergised
solenoid energised
Switching times
at 40 l/min. and 100 bar
400--P--181260--EN--/09.15
3/ 4
5. Dimensions
PG 9
87 13
Clearance
to remove
the coil
61
73
156
74 9
Clearance to remove
the plug
4/2 valve, --A-- model
4/3 valve
Solenoid a Solenoid a Solenoid b
73
74
220
73
87
51
25
A
View A
46
32,5
48
31
P
BA
T
15,7 40,4
ISO 4401 siz e 3 interface
8
M5
Supplied
complete with
4 mounting bolts
M5 x 30
Manual override at
solenoid end(s) only
4 A/F hex. skt.,
tightening tor que
Ma = 4 ... 6 Nm
30 A/F hex.,
tightening tor que
Ma = 30 ... 36 Nm
Plug can be
turned 4 x 90°
Coil can be
turned 4 x 90°
6. Schematic section
Seal kit no. DS--150--V (Viton), comprising *):
Itm.
Qty. Qty. Description Size
1 4*) 4 O--ring no. 012 ∅ 9,25 x 1,78
2 2*) 2 O--ring no. 114 ∅ 15,54 x 2,62
3 2*) 1 O--ring no. 022 ∅ 25,12 x 1,78
4 2*) 1 O--ring no. 213 ∅ 23,39 x 3,53
4/2 valves
4/3 valves
7. Installation and servicing
All installation and servicing must be
carried out with care, and by qualified
personnel only. At installation, make
sure that the valve interface aligns with
the interface of the mating surface. Use
the specified tightening torque when fit-
ting the valve mounting bolts. When
changing seals, the new seals must be
thoroughly oiled or greased before they
are fitted. Use the specified tightening
torque when fitting the threaded end
plug.
400--P--181260--EN--/09.15
4/ 4
8. Ordering code
WED
Voltage and current plainly specified
= direct acting, solenoid operated directional valve
WED L -- 43 -- 6 24 VDC
42
43
=
=
4/2 valve
4/3 valve
1 ... 9 = design number (omit when ordering new units)
Ex.
-- G -- V -- _
A
D, G, H, J, GG
4/2 function, solenoid at A end
4/3 function, solenoids at both ends
6 = ISO 4401 size 3 interface (nominal size 6 mm)
V
Special seals by arrangement
= Viton seals (standard)
L = ”Low--Watt” model
=
=
9. Related data sheets
Old no. New no.
i -- 31 400-- P--030501--E ISO 4401 size 3 interface (DIN 24 340 A6)
i -- 00 400-- P--010101--E Table of interface equivalents
E 2015 by Bucher Hydraulics AG Frutigen, CH-3714 Frutigen
www.bucherhydraulics.cominfo.ch@bucherhydraulics.com
All rights reserved.
Data is provided for the purpose of product description only, and must not be construed as warranted characteristics in the legal sense. The
information does not relieve users from the duty of conducting their own evaluations and tests. Because the products are subject to continual
improvement, we reserve the right to amend the product specifications contained in this catalogue.
