Valve configuration, see table
:
A = open in resting position
C = closed in resting position
www.atos.com
Solenoid directional valves type DLOH, DLOK
poppet type leak free, direct operated, ISO 4401 size 06
Table E041-17/E
DLOH and DLOK are poppet type, two
or three way, two position direct opera-
ted solenoid valves, designed to operate
in oil hydraulic systems with leak free
requirements.
They are operated by wet type solenoids
type OE for DC and RC rectified current
supply.
The DLOH are available with optional
manual prolonged override, protected
by a rubber cap 쩽.
Standard dimensions cartridge con-
struction allows a wide variety of confi-
gurations only by easy replacement of
the cartridge 쩻.
Cartridges of DLOH are available also
as loose parts for mounting in manifolds,
see .
They can be supplied with optional devi-
ces for control of switching times.
Standard electric connectors 쩺 able to
satisfy the requirements of modern
machines for electric interfaces charac-
teristics.
The coils 쩹 are fully encapsulated with
temperature class H.
Surface mounting: ISO 4401 size 06.
Max flow: 12 l/min (DLOH)
30 l/min (DLOK).
Max pressure: 350 bar for DLOH
315 bar for DLOK
10
1 MODEL CODE
DLO 2
Directional control
valve poppet type
size 06
H = max flow: 12 l/min
K = max flow: 30 l/min
2 = two way (only DLOH)
3 = three way
24DC ** /*H -
Series number
X = without connector
See section
for available connectors, to be
ordered separately
A /WP
Options:
/WP = prolonged manual override protected by
rubber cap (only DLOH)
/R = with check valve on port P, see
(only
DLOH)
/S = no hand operation and poppet overlapping
during the intermediate position for safety
applications (only DLOH)
/L1, /L2, /L3 = device for controlling switching time
- O = solenoid OLK for DC supply (only for DLOK)
- U = solenoid OLU for DC supply (only for DLOH)
Voltage code, see section
:
00 = solenoid valve without coils
UX-
DLOH-3C/R
DLOK-3C
Option /WP Option /S
2 VALVE CONFIGURATION
E041
DLOH-2A DLOH-2A/R DLOH-2C DLOH-2C/R DLOK-3A
DLOH-3A DLOH-3A/R DLOH-3C DLOH-3C/R DLOK-3C
Seals material:
omit for NBR
(mineral oil & water
glycol)
PE = FPM
666
667
669
Function
Code of
connector
4 ELECTRIC/ELECTRONIC CONNECTORS ACCORDING TO DIN 43650
The connectors must be ordered separately
Connector IP-65, suitable for direct connection to electric supply source
As 666 connector IP-65 but with built-in signal led, suitable for direct connection to electric supply source
With built-in rectifier bridge for supplying DC coils by alternating current (AC 110V and 230V - Imax 1A)
3 MAIN CHARACTERISTICS OF DIRECTIONAL VALVES TYPE DLOH, DLOK
DLOH
DLOK
Assembly position / location Any position
Subplate surface finishing Roughness index Ra 0,4 - flatness ratio 0,01/100 (ISO 1101)
Ambient temperature from -20°C to +70°C
Fluid Hydraulic oil as per DIN 51524 .... 535; for other fluids see section
Recommended viscosity 15 ÷ 100 mm
2
/s at 40°C (ISO VG 15 ÷ 100)
Fluid contamination class ISO 4406 class 21/19/16 NAS 1638 class 10, in line filters of 25 μm (β25 _>75 recommended)
Fluid temperature -20°C +60°C (standard seals and water glycol) -20°C +80°C (/PE seals)
Flow direction As shown in the symbols of table
Operating pressure Ports P, A, B: 350 bar
Port T: 160 bar
Ports P, A, B: 315 bar
Port T: 210 bar
Rated flow See diagrams Q/Δp at section
Maximum flow 12 l/min see operating limits at section
30 l/min see operating limits at section
Internal leakage Less than 5 drops/min (≤ 0,36 cm
3
/min) at max working pressure
DLOH
DLOK
3.1 Coils characteristics
Insulation class H (180°C) Due to the occuring surface temperatures of the solenoid coils, the European standards
EN ISO 13732-1 and EN ISO 4413 must be taken into account
Connector protection degree IP 65
Relative duty factor 100%
Supply voltage and frequency See electric feature
Supply voltage tolerance ± 10%
Certification
CURUS
666, 667 (for AC or DC supply) 669 (for AC supply)
666, 667
1 = Positive
2 = Negative
= Coil ground
110/50 AC
110/60 AC
230/50 AC
230/60 AC
669
1,2 = Supply voltage V
AC
3 = Coil ground
CONNECTOR WIRING
SUPPLY VOLTAGES
666 667
All 24 AC or DC
voltages 110 AC or DC
220 AC or DC
E041
TEST CONDITIONS:
- 8 l/min; 150 bar
- nominal voltage
- 2 bar of counter pressure on port T
- based on mineral oil ISO VG 46 at 50°C
The response time is affected by elasticity of
the hydraulic circuit, by variation of hydraulic
characteristics and temperature
DLO*-** –4525
DLO*-** 30 – 75
DLO*-**/L1 –6060
DLO*-**/L2 –8080
DLO*-**/L3 – 110 150
666, 667
669
666, 667
666, 667
666, 667
Switch-on
AC
Switch-on
DC
Switch-off
Valve type Connector
8 SWITCHING TIMES (average values in msec)
(1) For other supply voltages available
on request see technical table E010.
(2) Average values based on tests
performed at nominal hydraulic con-
dition and ambient/coil temperature
of 20°C.
P → AA→ T
(P → B) (B →T)
6
FLOW VERSUS PRESSURE DROP DIAGRAM based on mineral oil ISO VG 46 at 50°C
Flow rate [l/min] Flow rate [l/min]
Valve pressure drop Δp [bar]
Flow rate [l/min]
Inlet pressure [bar]
Valve pressure drop
Δp [bar]
7
OPERATING LIMITS based on mineral oil ISO VG 46 at 50°C
A = DLOH-3A
B = DLOH-2A, DLOH-3C
C = DLOK-3A
D = DLOK-3C
A
D
Flow rate [l/min]
Inlet pressure [bar]
C
B
EF
DLOH-2A B–
DLOH-2C C–
DLOH-3A DC
DLOH-3C CA
DLOK-3A FE
DLOK-3C FE
Flow direction
Valve type
(1)
(1) For two-way valves, pressure drop refers to P→T
The diagram has been obtained with warm solenoids and power supply at lowest value (Vnom - 10%).
AB
CD
5 ELECTRIC FEATURES
Valve
External supply
nominal voltage ± 10%
(1)
Type of
connector
Power
consumption
(2)
Code of spare coil
Colour of
coil label
DLOH
DLOK
DIRECT
CURRENT
6 DC
12 DC
24 DC
48 DC
110/50 AC
120/60 AC
230/50 AC
230/60 AC
666
or
667
33 W
COU-6DC/ 80
COUR-12DC /10
COUR-24DC /10
COU-48DC /80
brown
green
red
silver
gold
gold
blue
blue
–
–
–
–
–
–
–
–
110/50 AC
120/60 AC
230/50 AC
230/60 AC
669
666
or
667
669
40 VA
35 VA
40 VA
35 VA
32 W
40 W
40 VA
35 VA
40 VA
35 VA
COU-110RC /80
COUR-110RC /10
COU-230RC /80
COUR-230RC /10
–
–
–
–
–
–
–
–
ALTERNATE
CURRENT
DIRECT
CURRENT
ALTERNATE
CURRENT
12 DC
24 DC
110 DC
220 DC
6 DC
12 DC
24 DC
48 DC
110 RC
220 RC
110RC
230RC
230/60 AC
12 DC
24 DC
110 DC
220 DC
Voltage
code
Valve
01/13
Note:
(*) for version /WP the height is increased by 14,5 mm
LU-O2*, cartridge of DLOH-2*
Notes:
The orifice B is not used by the cartridge type LU-O3A
The orifice A is not used by the cartridge type LU-O3C
(*) for version /WP the height is increased by 14,5 mm
LU-O3*, cartridge of DLOH-3*
Subplate model Ports location
GAS ports
Ø Counterbore
[mm]
A-B-P-T A-B-P-T
Mass
[Kg]
11 MOUNTING SUBPLATES
10 INSTALLATION DIMENSIONS OF CARTRIDGES [mm]
BA-202 (1) Ports A, B, P, T underneath; 3/8" – 1,2
BA-204 (1) Ports P, T underneath; ports A, B on lateral side 3/8" 25,5 1,8
BA-302 (1) Ports A, B, P, T underneath; 1/2" 30 1,8
(1) The subplates are supplied with 4 fastening bolts M5x50 class 12.9; Also available multi station and modular subplates. For further details see table K280.
DLOH-*
DLOK-*
These cartriges can be installed in the manifolds
Overall dimensions refer to valves with connectors type 666
DLOH-2*
DLOH-2*/R
9 DIMENSIONS [mm]
DLOK-3*
ISO 4401: 2005
Mounting surface:
4401-03-02-0-05
without A and B ports
Fastening bolts:
4 socket head screws M5x50 class 12.9
Tightening torque = 8 Nm
Seals: 2 OR 108
Ports P, T:
Ø = 7,5 mm (max)
Mass: 1,5 Kg
Mass: 1,5 Kg
ISO 4401: 2005
Mounting surface:
4401-03-02-0-05
Fastening bolts:
4 socket head screws M5x50 class 12.9
Tightening torque = 8 Nm
Seals: 4 OR 108
Ports P, A, B, T:
Ø = 7,5 mm (max)
P = PRESSURE PORT
A = USE PORT
B = CLOSED
T = TANK PORT
For the max pressures on ports, see section
Mass: 1,6 Kg Mass: 1,6 Kg
P = PRESSURE PORT
T = USE PORT
For the max pressures on ports, see section
DLO*-3*
DLO*-3*/R
ISO 4401: 2005
Mounting surface:
4401-03-02-0-05
Fastening bolts:
4 socket head screws M5x50 class 12.9
Tightening torque = 8 Nm
Seals: 4 OR 108
Ports P, A, B, T:
Ø = 7,5 mm (max)
P = PRESSURE PORT
A = USE PORT (not used for -3C versions)
B = USE PORT (not used for -3A versions)
T = TANK PORT
For the max pressures on ports, see section
DLOK-3C DLOK-3A
