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QDE*
DIRECT OPERATED
FLOW CONTROL VALVE WITH
PROPORTIONAL CONTROL AND
COMPENSATION
SERIES 10
82 220/112 ED
— The QDE* are a compensated flow control valves with
pressure compensation and proportional electric control,
with mounting surface according to ISO 6263-03 and ISO
4401-05 (CETOP RP121H), supplied with 2 or 3 way
design, depending on the use of port P.
— This valve is used for the regulation of the flow in branches
of a hydraulic circuit or for the speed control of hydraulic
cylinders.
— The flow can modulated continuously in proportion to the
current supplied by the solenoid
— The valve can be controlled directly from a current
controlled power supply or with an integrated electronic,
which allow to fully exploit the performance of the valve.
— QDE* valves are available in two sizes, for 5 flow
adjustment ranges of up to 80 l/min.
OPERATING PRINCIPLE
QDE3 QDE5
Maximum operating pressure bar 250 250
Controlled flow (Q
B
)
l/min 14 20 30 40 80
Minimum suggested input flow (Q
A
)
l/min 40 50 40 50 90
Spring setting in pressure compensator bar 4 8 4 8 8
Minimum pressure drop A > B bar 10 22 10 22 22
Hysteresis
% of Q
max
< 6 %
< ±2 %
Repeatability
% of Q
max
< ± 1,5 %
Electrical characteristics see paragraph 6
Fluid temperature range °C -20 / +60
Fluid temperature range °C -20 / +80
Fluid viscosity range cSt 10 ÷ 400
Fluid contamination degree according to ISO 4406:1999 class 18/16/13
Recommended viscosity cSt 25
Mass kg 1,6 4,6
HYDRAULIC SYMBOLS
TWO WAYS
THREE WAYS
PERFORMANCES (Obtained with mineral oil of viscosity
36 cSt at 50°C and electronic control card)
SUBPLATE MOUNTING
ISO 6263-03 (CETOP 03)
ISO 4401-05 (CETOP 05)
p max
250 bar
Q max 80 l/min
NC
NC
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QDE*
SERIES 10
1 - IDENTIFICATION CODE
2 - CONFIGURATIONS AND MOUNTING INTERFACE
The function of two or three ways is obtained realizing the mounting interface according to ISO 6263-03 (CETOP 03) for QDE3 and
ISO 4401-05 (CETOP 05) for QDE5, using the port P for three way configuration only. The port T will never be used.
To use the valve in two ways for QDE3 is also possible to interpose a subplate with plug (code 0113388 and 0530384) be ordered separately.
Seals:
N = NBR seals (standard)
V = FPM seals for special fluids
Series no. (from 10 to 19 sizes and mounting
dimensions remains unchanged)
D12 = Nominal solenoid voltage 12V DC
D24 = Nominal solenoid voltage 24V DC
Coil electrical connection:
plug for connector type
DIN 43650 (standard)
Controlled flow:
QDE3
14 = 14 l/min
20 = 20 l/min
30 = 30 l/min
40 = 40 l/min
QDE5
80 = 80 l/min
Direct flow control valve
pressure compensated
Electric proportional control
3 = Size NG06 - ISO 6263-03 (CETOP 03)
5 = Size NG10 - ISO 4401-05 (CETOP 05)
Q D E 3 - / 10 - K1
ISO 6263-03-03-*-97
(CETOP 4.5.2-2-03-250)
2-WAYS
3-WAYS
Manual override
(see par. 12)
ISO 4401-05-04-0-05
(CETOP 4.5.4-05-250)
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QDE*
SERIES 10
4 - CHARACTERISTIC CURVES QDE3 (obtained with viscosity of 36 cSt a 50°C)
4.1 - Two ways
FLOW CONTROL Q = f (command)
THREE WAYS FLOW CONTROL Q = f (p
B
)
Typical flow rate characteristics A → B for controlled flow rate: 14 -
20 - 30 - 40 l/min in function of the current supplied to the solenoid
(D24 version, maximum current 860 mA, PWM 100 Hz)
Typical flow rate characteristics A → B for controlled flow rate: 14 -
20 - 30 - 40 l/min in function of the current supplied to the solenoid
(D24 version, maximum current 860 mA, PWM 100 Hz)
4.2 - Three ways
Pressure drops with flow A→P.
Obtained with Q
B
= 0 (no current)
PRESSURE DROPS ∆p A→P (Q
B
= 0)
100% ref
100% ref
FLOW CONTROL Q = f (p
B
)
FLOW CONTROL Q = f (command)
FLOW CONTROL Q = f (p
B
)
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QDE*
SERIES 10
4 - CHARACTERISTIC CURVES QDE5 (obtained with viscosity of 36 cSt a 50°C)
4.1 - Two ways
FLOW CONTROL Q = f (command)
THREE WAYS FLOW CONTROL Q = f (p
B
)
Typical flow rate characteristics A → B in function of the current
supplied to the solenoid (D12 version, max current 2.8 A, PWM 100
Hz).
Typical flow rate characteristics A → B in function of the current
supplied to the solenoid (D12 version, max current 2.8 A, PWM 100
Hz).
4.2 - Three ways
Pressure drops with flow A→P.
Obtained with Q
B
= 0 (no current)
PRESSURE DROPS ∆p A→P (Q
B
= 0)
100% ref
100% ref
FLOW CONTROL Q = f (p
B
)
FLOW CONTROL Q = f (command)
FLOW CONTROL Q = f (p
B
)
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QDE*
SERIES 10
7 - STEP RESPONSE
(obtained with mineral oil with viscosity of 36 cSt at 50°C and electronic control
cards)
Step response is the time taken for the valve to reach 90% of the
set flow value following a step change of reference signal.
The table illustrates typical response times with ∆p = 8 bar.
REFERENCE SIGNAL STEP 0 →100%
Step response [ms] < 70
8 - INSTALLATION
QDE* valves can be installed in any position without impairing
correct operation.
Ensure that there is no air in the hydraulic circuit.
Valves are fixed by means of screws or tie rods on a flat surface
with planarity and roughness equal to or better than those indicated
in the relative symbols. If minimum values are not observed fluid
can easily leak between the valve and support surface.
Surface quality
5 - HYDRAULIC FLUIDS
Use mineral oil-based hydraulic fluids HL or HM type, according to ISO 6743-4. For these fluids, use NBR seals. For fluids HFDR type
(phosphate esters) use FPM seals (code V). For the use of other kinds of fluid such as HFA, HFB, HFC, please consult our technical
department. Using fluids at temperatures higher than 80 °C causes a faster degradation of the fluid and of the seals characteristics.
The fluid must be preserved in its physical and chemical characteristics.
6 - ELECTRICAL CHARACTERISTIC
Proportional solenoid
The proportional solenoid comprises two parts: tube and coil.
The tube, screwed to the valve body, contains the armature which is
designed to maintain friction to a minimum thereby reducing
hysteresis.
The coil is mounted on the tube secured by means of a lock nut and
can be rotated through 360° depending on installation clearances.
NOMINAL VOLTAGE V DC 12 24
RESISTANCE (at 20°C)
QDE3
QDE5
Ω 3,66
3,2
17,6
8,65
NOMINAL CURRENT
QDE3
QDE5
A 1,88
2,8
0,86
1,6
PWM FREQUENCY
QDE3
QDE5
Hz 200
100
100
100
DUTY CYCLE
100%
ELECTROMAGNETIC COMPATIBILITY
(EMC)
According to
2004/108/CE
CLASS OF PROTECTION:
atmospheric agents (CEI EN 60529)
coil insulation (VDE 0580)
Impregnation
IP 65
class H
class F
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QDE*
SERIES 10
9 - QDE3 OVERALL AND MOUNTING DIMENSIONS
dimensions in mm
Fastening bolts: N. 4 SHC screws ISO 4762 M5x30
Torque: 5 Nm - A8.8 screws
1 Mounting surface with sealing rings:
N. 4 OR type 2037 (9.25x1.78) - 90 Shore
2 Standard manual override integrated in the
solenoid tube
3 Coil removal space
4 DIN 43650 Electrical coil connector
5 Connector removal space
10 - QDE5 OVERALL AND MOUNTING DIMENSIONS
dimensions in mm
Fastening bolts: N. 4 SHC screws ISO 4762 M6x40
Torque: 8 Nm - A8.8 screws
1 Mounting surface with sealing rings:
N. 5 OR type 2050 (12.42x1.78) - 90 Shore
2 Standard manual override integrated in the
solenoid tube
3 Coil removal space
4 DIN 43650 Electrical coil connector
5 Connector removal space
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QDE*
SERIES 10
12 - ELECTRONIC CONTROL UNITS
QDE3
EDC-111 24V DC solenoids
plug version
see cat. 89 120
EDC-142 12V DC solenoids
EDM-M111 24V DC solenoids
rail mounting
DIN EN 50022
see cat. 89 250
EDM-M142 12V DC solenoids
11 - MANUAL OVERRIDE
The standard valve has solenoids whose pin for the manual operation is integrated in the tube. The operation of this control must be executed
with a suitable tool, minding not to damage the sliding surface.
On demand, there are three types of manual override:
- CM version, manual override belt protected (available only for QDE3).
- CS version, with metal ring nut provided with a M4 screw and a blocking locknut to allow the continuous mechanical operations (available only
for QDE3).
- CK version, knob. When the set screw is screwed and its point is aligned with the edge of the knob, tighten the knob till it touches the spool:
in this position the override is not engaged and the valve is de-energized. After adjusting the override, tighten the set screw in order to avoid
the knob loosing.
EDC-131 24V DC solenoids
plug version
see cat. 89 120
EDC-151 12V DC solenoids
EDM-M131 24V DC solenoids
rail mounting
DIN EN 50022
see cat. 89 250
EDM-M151 12V DC solenoids
QDE5
CK Version for QDE3 CK Version for QDE5
CM Version CS Version
Spanner for set screw: 3 mm.
Code: 3803210005
Spanner for set screw : 3 mm.
Code: 3803260003
Code: 3803210004
Code: 3803210003
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DUPLOMATIC OLEODINAMICA S.p.A.
20015 PARABIAGO (MI) Via M. Re Depaolini 24
Tel. +39 0331.895.111
Fax +39 0331.895.339
www.duplomatic.com e-mail: sales.exp@duplomatic.com
QDE*
SERIES 10
REPRODUCTION IS FORBIDDEN. THE COMPANY RESERVES THE RIGHT TO APPLY ANY MODIFICATIONS.
DUPLOMATIC OLEODINAMICA S.p.A.
20015 PARABIAGO (MI) Via M. Re Depaolini 24
Tel. +39 0331.895.111
Fax +39 0331.895.339
www.duplomatic.com e-mail: sales.exp@duplomatic.com
