Parker D31DW*EE Series User manual

Bulletin HY11-5715-681/UK
Pilot Operated
Proportional DC Valve
Operating instructions
Series
D31DW*EE, D31NW*EE, D*1VW*EE
Design series 92
II 2 G c T4 Gb
-20 °C < Ta< +60 °C
Parker Hannifin
Manufacturing Germany GmbH & Co. KG
Hydraulic Controls Division Europe
Gutenbergstr. 38
41564 Kaarst, Germany
Tel.: [phone]
E-mail: [e-mail]
Copyright © 2013, Parker Hannifin Corp.

2
Pilot Operated Proportional DC Valve
Series D*W*EE Explosion Proof
Operating Instructions
Parker Hannifin Corporation
Hydraulics Group
D_W_EE_92 5715-681 UK.indd CM 07.05.13
Note
This document and other information from Parker-Hannifin Corpo-
ration, its subsidiaries and authorized distributors provide product
or system options for further investigation by users having techni-
cal expertise.
The user, through its own analysis and testing, is solely responsible for
making the final selection of the system and components and assur-
ing that all performance, endurance, maintenance, safety and warn-
ing requirements of the application are met.The user must analyze all
aspects of the application, follow applicable industry standards, and
follow the information concerning the product in the current product
catalog and in any other materials provided from Parker or its subsid-
iaries or authorized distributors.
To the extent that Parker or its subsidiaries or authorized distributors
provide component or system options based upon data or specifica-
tions provided by the user, the user is responsible for determining that
such data and specifications are suitable and sufficient for all applica-
tions and reasonably foreseeable uses of the components or systems.

Pilot Operated Proportional DC Valve
Series D*W*EE Explosion Proof
Operating Instructions
3Parker Hannifin Corporation
Hydraulics Group
D_W_EE_92 5715-681 UK.indd CM 07.05.13
0. EC declaration of conformity 4
1. Introduction 5
Ordering code 6
Technical data 8
Characteristic curves 9
Pilot oil 11
Dimensions 12
Name plate 15
2. Safety instructions 15
Symbols 15
Marking, Name plates 15
Work on the valve 16
3. Important information 16
Correct use 16
Common instructions 16
Liability 16
Storage 16
4. Installation 17
Scope of delivery 17
Installation 17
Electrical connection 17
Operation limits 17
Pressure fluids 17
5. Operating instructions 20
Air bleeding of hydraulic system 20
Filter 20
Flushing 20
6. Maintenance 20
7. Troubleshooting 21
A1 Extract from standards/directives 22
A2 User guide – Solenoid 23
A3 Type-examination certificate – Solenoid 27
A4 Declaration of conformity - Solenoid 32
A5 Mounting instruction cable gland 33
Contents Page

4
Pilot Operated Proportional DC Valve
Series D*W*EE Explosion Proof
Operating Instructions
Parker Hannifin Corporation
Hydraulics Group
D_W_EE_92 5715-681 UK.indd CM 07.05.13
0. EC declaration of conformity
EG KONFORMITÄTSERKLÄRUNG
DECLARATION OF CONFORMITY
DECLARATION DE CONFORMITÉ
im Sinne der EG-Richtlinie 94/9/EG vom 23.03.1994 und mit den zu ihrer Umsetzung erlassenen Rechtsvorschriften
Pursuant to European Directive 94/9/EC dated 23 March 1994 and statutory provisions relating to its implementation
Dans le sens de la directive 94/9/CE datée du 23 3 1994 et des prescriptions légales promulguées quant à son
application,
Wir Parker Hannifin GmbH
We
Nous
Anschrift Gutenbergstraße 38
address DE-41564 Kaarst
adresse
erklären, dass die in der Betriebsanleitung beschriebenen, explosionsgeschützt ausgeführten vorgesteuerten Wegeventiles
hereby declare that, as described in the operation instructions, the explosion-proof pilot operated DC valve
déclarons que, comme décrit dans ce mode d’emploi, les soupapes antidéflagrantes type distributeur à commande pilotée
der Serie D31DW*EE, D31NW*EE,
series D*1VW*EE
de la série
Geräte im Sinne des Artikels 1 (3) der RL 94/9/EG sind und die grundlegenden Sicherheits- und Gesundheitsanforderungen
gemäß Anhang II der Richtlinie 94/9/EG erfüllen.
are equipment as defined in Article 1 (3) of Directive 94/9/EC and comply with the essential health and safety requirements
set out in Annex II of Directive 94/9/EG.
correspondent aux appareils dans le sens de l’article 1 (3) de la directive RL 94/9/CE et qu’ils remplissent les exigences
fondamentales relatives à la sécurité et la santé selon l’annexe II de la directive 94/9/CE.
Die grundlegenden Sicherheits- und Gesundheitsanforderungen werden erfüllt in Übereinstimmung mit folgenden Normen:
The essential health and safety requirements are met in accordance with the following standards:
Les exigences relatives à la sécurité ainsi qu’à la santé sont remplies en conformité avec les normes suivantes:
EN 1127-1
EN 13463-1
EN 13463-5
EN 982
Die Kennzeichnung der Geräte enthalten folgende Angaben:
The marking of the equipment contains the following information:
Les marquages des appareils contiennent les indications suivantes :
II 2 G c T4 Gb
-20 °C ≤Ta ≤+60 °C
Der korrekte Gebrauch der Geräte bei Installation und Betrieb wird vorausgesetzt. Details zum korrekten Gebrauch (ein-
schließlich Explosionsschutz) sind in der Betriebsanleitung zu finden.
It is assumed that the equipment will only be installed and operated in accordance with correct use. Details of correct use
can be found in the operating instructions incl. explosion protection.
Il est obligatoire d’installer et d’utiliser les appareils de la manière correcte. Le mode d’emploi contient des détails pour
l’utilisation correcte, comprenant la protection antidéflagrante.
Kaarst, 03.12.2012
Technischer Leiter QM-Beauftragter
Technical manager QM officer
Directeur technique Responsable qualité
Hansgeorg Kolvenbach Wolfgang Bausch

Pilot Operated Proportional DC Valve
Series D*W*EE Explosion Proof
Operating Instructions
5Parker Hannifin Corporation
Hydraulics Group
D_W_EE_92 5715-681 UK.indd CM 07.05.13
D31DW
D91VW
D31NW D41VW
D91VW D111VW
1. Introduction
The D*1*W*EE with explosion proof solenoids are
based on the standard D*1*W series. The specif-
ic solenoid design allows the usage in hazardous
environments.
The explosion proof class is
Ex mbe II T4 Gb
for use in zone 1 (conform to ATEX).
All explosion proof solenoids are DC design. The
valves for AC operate with integrated rectifier.
The pilot operated valves are available in 4 sizes:
D31DW NG10 (standard)
D31NW NG10 (high flow)
D41VW NG16
D91VW NG25 (for port diameter up to 32 mm)
D111VW NG32
All valves are piloted by a D1VW valve. The mini-
mum pilot pressure must be ensured for all oper-
ating conditions of the directional valve.
Additionally spools with a P to T connection in the
de-energized position need an external pressure
supply (external inlet) or an integral check valve.

6
Pilot Operated Proportional DC Valve
Series D*W*EE Explosion Proof
Operating Instructions
Parker Hannifin Corporation
Hydraulics Group
D_W_EE_92 5715-681 UK.indd CM 07.05.13
Series Spool type
3 position spool
Code Spool type
a 0 b
001 2)
002 2)
003 3)
004 3)
005 3)
006 3)
0091) 2)
011 3)
015 3)
016 3)
021 3)
022 3)
2 position spool
Code Spool type
a b
0202)
0302)
3 position spool
Code Spool position
C 2)
3 positions.
Spring offset in position “0“.
Operated in position “a“ or “b“.
Standard Spool type 009
E 2)
Operated in
position “a“.
Operated in
position “b“.
2 positions.
Spring offset in position “0“.
F 2)
Spring offset in
position “b“.
Spring offset in
position “a“.
2 positions.
Operated in position “0“.
K 2)
Operated in
position “b“.
Operated in
position “a“.
2 positions.
Spring offset in position “0“.
M 2)
Spring offset in
position “a“.
Spring offset in
position “b“.
2 positions.
Operated in position “0“.
R 3) No centre in
offset position.
No centre in
offset position.
2 positions, detent.
Operated in position “0“ or “b“.
S 3) No centre in
offset position.
No centre in
offset position.
2 positions, detent.
Operated in position “0“ or “a“.
No center in offset position.
2 position spools
Code Spool position
B 2) Spring offset in position “b“.
Operated in position “a“.
D 3)
Detent, operated in position
“a“ or “b“. No center or offset
position.
H 2) Spring offset in position “a“.
Operated in position “b“.
Spool
position
Code Bore Size Feature
D31DW Ø11mm NG10
D31NW Ø11mm NG10 High flow
D41VW Ø20mm NG16
D91VW Ø32mm NG25
D111VW Ø50mm NG32
Ordering code

Pilot Operated Proportional DC Valve
Series D*W*EE Explosion Proof
Operating Instructions
7Parker Hannifin Corporation
Hydraulics Group
D_W_EE_92 5715-681 UK.indd CM 07.05.13
Solenoid
options:
Explosion
proof
Ex mbe II
Solenoid
voltage
Pilot oil
supply
and drain
options
Accessories
Further spool types and solenoid voltages on request.
Connection:
Explosion
proof with
cable glands
Seals
Code Seal
N NBR
V FPM
Code Solenoid voltage
J 24V =
N230 V/50 Hz
P 110 V/50 Hz
Code Inlet Outlet
1 Internal External
2 External External
3 4) Integral
check valve External
4 5) Internal Internal
5 External Internal
6 4) Integral
check valve Internal
Code Accessories
ohne Standard valve
w/o accessories
3A Pilot choke, meter-out
3B Pilot choke, meter-in
3C Pilot with pressure
reducing valve
3D 6) Stroke adjustment
side B
3E 6) Stroke adjustment
side A
3F Stroke adjustment
side A and B
3R meter-out / pressure
reducing valve
1T meter-in / pressure
reducing valve
Design
series
(not required
for ordering)
1) Consider specific spool position.
2) All sizes (D31, D41, D 91, D111) available
3) Only D31, D41, D91 available.
4) Not for D31DW and D111VW available.
5) Not for spools 002, 009 available.
6) Only D31, D41, D91 available.
EE

8
Pilot Operated Proportional DC Valve
Series D*W*EE Explosion Proof
Operating Instructions
Parker Hannifin Corporation
Hydraulics Group
D_W_EE_92 5715-681 UK.indd CM 07.05.13
60 / 40 (50/60) 95 / 65 150 / 170 470 / 390
55 / 40 (50/60) 75 / 65 110 / 170 320 / 390
55 / 40 (50/50) 60 / 65 90 / 170 210 / 390
55 / 40 (50/50) 60 / 65 85 / 170 200 / 390
40 / 30 (30/50) 75 / 55 130 / 155 450 / 375
35 / 30 (30/50) 65 / 55 90 / 155 300 / 375
35 / 30 (30/50) 40 / 55 70 / 155 190 / 375
35 / 30 (30/50) 40 / 55 65 / 155 180 / 375
General
Design Directional spool valve
Actuation Solenoid
Series D31DW D31NW D41VW D91VW D111VW
Size NG10 NG10 NG16 NG25 NG32
Weight (1/2 solenoids) [kg] 6.0 / 6.6 7.6 / 8.1 9.7 / 10.3 17.9 / 18.6 67.4 / 68.0
Mounting interface DIN 24340
A10
DIN 24340
A10
DIN 24340
A16
DIN 24340
A25
DIN 24340
A32
ISO 4401 ISO 4401 ISO 4401 ISO 4401 ISO 4401
NFPA D05 NFPA D05 NFPA D07 NFPA D08 NFPA D10
CETOP RP 121-H
Mounting position unrestricted, preferably horizontal
Ambient temperature [°C] -20...+60
MTTFDvalue [years] 75
Hydraulic
Max. operating pressure [bar] P, A, B: 350; T: 140
Fluid Hydraulic oil in accordance with DIN 51524 / 51525
Fluid temperature [°C] -25 ... +60
Viscosity permitted [cSt] /
recommended [cSt] /
[mm²/s]
[mm²/s]
2.8...400
30...80
Filtration ISO 4406 (1999); 18/16/13
Flow max. [l/min] 150 170 300 700 2000
Leakage at 350 bar (per flow path) [ml/min] up to 100* up to 150* up to 200* up to 800* up to 5000*
*depending on spool
Opening pressure integral check valve [bar] n.a. see p/Q
diagram
see p/Q
diagram
see p/Q
diagram
n.a.
Minimum pilot supply pressure [bar] 5 7 5
Static / Dynamic
Step response at 95 % [ms] Energized / De-energized
DC solenoids Pilot pressure 50 bar
100 bar
250 bar
350 bar
AC solenoids Pilot pressure 50 bar
100 bar
250 bar
350 bar
Electrical characteristics
Duty ratio 100 % ED; CAUTION: coil temperature up to 135 °C possible
Protection class , Ex mbe II T4 Gb, IP66 (plugged and mounted correctly)
Code J N P
24 V = 230/50 Hz 110/50 Hz
±10 ±10 ±10
1.0 0.12 0.25
24 24 24
Supply voltage / ripple [V]
Tolerance supply voltage [%]
Current consumption [A]
Power consumption [W]
Solenoid connection Box with M20x1.5 entry for cable glands. Solenoid identification as per
ISO 9461.
Wiring min. [mm²] 3 x 1.5 recommended
Wiring length max. [m] 50 recommended
With electrical connections the protective conductor (PE W) must be connected according to the relevant regulations.
Technical data

Pilot Operated Proportional DC Valve
Series D*W*EE Explosion Proof
Operating Instructions
9Parker Hannifin Corporation
Hydraulics Group
D_W_EE_92 5715-681 UK.indd CM 07.05.13
D31DW and D41VW
Spool
Code
Curve number
P-A P-B P-T A-T B-T
D3 D4 D3 D4 D3 D4 D3 D4 D3 D4
001 3 1 3 1 – – 1 4 1 5
002 3 1 3 2 4 6 1 4 1 6
003 3 1 4 2 – – 1 5 1 6
004 3 1 3 1 – – 1 5 1 5
005 3 2 4 2 – – 1 3 1 5
006 3 1 3 2 – – 1 3 1 6
007 4 1 3 1 – 6 1 4 1 5
009 3 2 3 9 8 8 1 7 1 10
011 3 1 3 1 – – 1 4 1 5
014 3 1 4 1 – 6 1 4 1 5
015 4 1 3 2 – – 1 4 1 6
016 4 2 3 2 – – 1 3 1 5
020 3 3 4 5 – – 1 3 1 5
021 4 2 3 8 – – 1 2 – –
022 3 8 4 2 – – – – 1 3
026 3 3 3 5 – – – – – –
030 3 2 1 3 – – 1 6 1 7
054 – 2 – 3 – – – 6 – 7
Flow curves
The flow curve diagram shows the flow versus
pressure drop curves for all spool types. The rel-
Spool
Code
Curve number
P-A P-B P-T A-T B-T
001 3 3 – 2 5
002 3 3 7 4 3
003 2 3 – 4 4
004 2 3 – 4 4
005 2 4 – 1 4
006 8 9 – 7 9
009 4 6 6 4 10
011 3 3 – 2 4
015 2 2 – 1 4
016 4 3 – 2 4
020 6 4 – 3 6
021 – 7 – 8 –
022 4 – – 9 –
030 5 3 – 2 5
D31NW
All characteristic curves measured with HLP46 at 50 °C.
evant curve number for each spool type, operat-
ing position and flow direction is given in the ta-
ble below.

10
Pilot Operated Proportional DC Valve
Series D*W*EE Explosion Proof
Operating Instructions
Parker Hannifin Corporation
Hydraulics Group
D_W_EE_92 5715-681 UK.indd CM 07.05.13
Flow curves / Integral check valve
Spool
Code
Curve number
P-A P-B P-T A-T B-T
D9 D11 D9 D11 D9 D11 D9 D11 D9 D11
001 3 5 2 5 – – 3 4 5 1
002 2 5 1 5 1 5 3 4 5 1
003 4 – 2 – – – 3 – 6 –
004 4 – 3 – – – 3 – 5 –
005 1 – 2 – – – 4 – 5 –
006 2 – 2 – – – 4 – 6 –
007 3 – 1 – 7 – 3 – 5 –
009 4 3 8 3 9 2 4 3 10 1
011 3 – 2 – – – 3 – 5 –
014 1 – 2 – 8 – 3 – 5 –
015 3 – 3 – – – 4 – 5 –
016 3 – 3 – – – 4 – 5 –
020 6 5 5 5 – – 6 3 8 1
021 5 – 10 – – – 3 – – –
022 10 – 5 – – – – – 5 –
026 6 – 5 – – – – – – –
030 3 5 2 5 – – 3 4 5 1
054 4 5 3 5 – – 3 4 5 1
D91VW and D111VW
Integral check valve in the P port
Mounting an integral check valve in the P port is
necessary to build up pilot pressure for valves with
P to T connection and internal pilot oil supply. The
pressure difference at the integral check valve
(see performance curves) is to be added to all flow
curves of the P-port of the main valve. Direction-
al valves with an integral check valve are available
for the series D31NW and D41VW.
Flow curve D41VW
Flow curve D91VWFlow curve D31NW
Pressure drop p [bar]
Flow Q [l/min]
100 200 300 400
500
600 700
10 9 8 7 6 5 4
14
12
10
8
6
4
2
00
D91VW

Pilot Operated Proportional DC Valve
Series D*W*EE Explosion Proof
Operating Instructions
11 Parker Hannifin Corporation
Hydraulics Group
D_W_EE_92 5715-681 UK.indd CM 07.05.13
D111VW
D91VW
D41VW
Pilot oil inlet (supply) and outlet (drain)
D31DW
D31NW
All orifice sizes for standard valves

12
Pilot Operated Proportional DC Valve
Series D*W*EE Explosion Proof
Operating Instructions
Parker Hannifin Corporation
Hydraulics Group
D_W_EE_92 5715-681 UK.indd CM 07.05.13
Dimensions
D31DW
Surface finish
BK385 4x M6x40
ISO 4762-12.9
13.2 Nm
±15 %
NBR: SK-D31DW-N-91
FPM: SK-D31DW-V-91
D31NW
Surface finish
BK385 4x M6x40
ISO 4762-12.9
13.2 Nm
±15 %
NBR: SK-4D02V-B1
FPM: SK-4D02V-B5

Pilot Operated Proportional DC Valve
Series D*W*EE Explosion Proof
Operating Instructions
13 Parker Hannifin Corporation
Hydraulics Group
D_W_EE_92 5715-681 UK.indd CM 07.05.13
Ø13.5
23076
57
238
130
116
118
12
A B
B A
D91VW
Surface finish
BK360 6x M12x75
ISO 4762-12.9
108 Nm
±15 %
NBR: SK-D81VW-N-91 / SK-D91VW-N-91
FPM: SK-D81VW-V-91 / SK-D91VW-V-91
D41VW
Surface finish
BK320
4x M10x60
2x M6x55
ISO 4762-12.9
63 Nm ±15 %
13.2 Nm ±15 %
NBR: SK-D41VW-N-91
FPM: SK-D41VW-V-91

14
Pilot Operated Proportional DC Valve
Series D*W*EE Explosion Proof
Operating Instructions
Parker Hannifin Corporation
Hydraulics Group
D_W_EE_92 5715-681 UK.indd CM 07.05.13
Ø22
96 325
59
200
198
229
362
20
A B
B A
D111VW
Surface finish
BK386 6x M20x90
ISO 4762-12.9
517 Nm
±15 %
NBR: SK-D111VW-N-91
FPM: SK-D111VW-V-91

Pilot Operated Proportional DC Valve
Series D*W*EE Explosion Proof
Operating Instructions
15 Parker Hannifin Corporation
Hydraulics Group
D_W_EE_92 5715-681 UK.indd CM 07.05.13
Name plate
Symbols
These instructions use symbols that must be not-
ed according to their importance:
Notes relating to the warranty
Notes relating to potential damage to the
valve or connected system components
Notes relating to potential hazards
Useful additional information
Marking, Name plates
Information attached directly to the valve such as
circuit plans and Name plates must be observed
and kept in a legible state.
2. Safety instructions
Read the operating instructions thoroughly before
installation, commissioning, maintenance, repair
and storage, and observe them.Failure to observe
the operating instructions may result in damage to
the valve or the parts of the system connected to it.
In particular, in the case of explosive atmospheres,
any failure to observe the operating instructions
may result in an explosion.
The system operator must make these operating
instructions visible and easily accessible to oper-
ating and maintenance personnel.
Compliance with applicable standards/legal re-
quirements must be enforced.This particularly ap-
plies to plant safety and environmental protection.
A list of such standards, etc. appears in the annex
by way of example.
Before starting commissioning, installation, main-
tenance and repair work, the hydraulic system
must be depressurised and power must be discon-
nected from the electrical installation.
In addition, the electrical installation must be se-
cured so that power cannot be restored unex-
pectedly.
The valve may become hot during operation. To
avoid risk of burns, do not touch the valve surface.
The system operator must monitor the tempera-
ture and cool the oil if necessary in order to the
Manufacturer's logo and address
CE mark, Ex protection symbol and explosion protection class
of the complete valve to European Directive 94/9/EC
Entire name of the complete valve
Hydraulic data
Code for year and month of manufacture
Hydraulic symbol
keep within the maximum temperatures set out in
these operating instructions (see technical data).
In this connection, observe the relevant directions
in the operating instructions of the supplier (sole-
noid system).
Any leaks occurring at the valve must be rectified
immediately.

16
Pilot Operated Proportional DC Valve
Series D*W*EE Explosion Proof
Operating Instructions
Parker Hannifin Corporation
Hydraulics Group
D_W_EE_92 5715-681 UK.indd CM 07.05.13
3. Important information
Correct use
These operating instructions apply to propor-
tional DC valves of series D1VW*EE, which
areintendedsolely foruseinmineral oilbased
hydraulic systems (DIN 51524).
Compliance with the operating instructions must
be ensured.
It is the responsibility of the operator to ensure that
the information in the technical data is followed.
Any different or modified use is not classed as
correct use.
The manufacturer's warranty will not cover any re-
sulting damage.
Storage time Storage requirements
12 months constant air humidity < 60 %
constant temperature < 25 °C
6 months varying air humidity,
varying temperature < 35 °C
Common instructions
We reserve the right to make technical changes
as a result of further development of the product
described in these operating instructions. Figures
and drawings in these instructions are simplified
depictions. As a result of further development, im-
provements and changes to the product, it is pos-
sible that the figures are not fully consistent with
the described valve.
The technical details and dimensions are non-bind-
ing. They may not form the basis of any claims.
Copyright reserved.
Liability
The manufacturer cannot accept liability for loss or
damage resulting from the following faults:
•฀incorrect installation
•฀unqualified operation
•฀inadequate maintenance
•฀use beyond specification
Do not dismantle the valve. If you suspect a
defect, return the valve to the factory.
Storage
If the valve needs to be temporarily stored, it must
be protected from dirt, the weather, and mechan-
ical damage. Each valve is tested with hydraulic
oil in the factory, so that the internal components
are protected from corrosion. However, this pro-
tection can only be guaranteed under the follow-
ing conditions:
Storage outside or in maritime or tropical
climates leads to corrosion and may make
the valve unusable.
Work on the valve
Work relating to the installation, commissioning,
maintenance and repair of the valve may only be
carried out by qualified persons. Qualified persons
are defined as persons who, on the basis of edu-
cation, experience and instruction, have sufficient
knowledge of applicable requirements and accept-
ed rules of the technology.
Throughout any installation, commissioning, main-
tenance and repair work, it is the responsibility of
the operator to ensure that there is no risk of ex-
plosion.
Before starting such work, the operator has to en-
sure that tools and equipment are only used if they
do not damage the valve and they do not leave be-
hind residues that are inflammable.
In addition, clean the valve before starting such
work, in particular removing dust, liquids and oth-
er deposits. Cleaning should be done using a lint-
free cloth.
Tools may not be used if they might cause a stat-
ic charge on use.

Pilot Operated Proportional DC Valve
Series D*W*EE Explosion Proof
Operating Instructions
17 Parker Hannifin Corporation
Hydraulics Group
D_W_EE_92 5715-681 UK.indd CM 07.05.13
4. Installation
Scope of delivery
As soon as you receive the valve you should check
if the package has the specified contents. In par-
ticular, check whether the type of protection indi-
cated on the valve is as described in these oper-
ating instructions.
The scope of delivery includes:
•฀Valve
•฀Operating instructions (including operating in-
structions of the valve as well as of the solenoid
and the declarations of conformity of the man-
ufactures)
As soon as you receive the shipment, please
checkfor anyobvioussignsofdamage caused
bycarelesstransport.Documentthe transport
damage and immediately notify the carrier,
the insurance company and the supplier.
Installation
•฀Compare the valve type as stated on the Name
plate with the parts list/circuit diagram.
•฀The valve can be installed in any position, ei-
ther fixed or movable.
Check the fixing surface and the cavity for
the valve.Permitted values:unevenness 0.01
mm/100mm, roughnessRmax =6.3µm.Keep
thevalve mountingsurface andthe areaclean.
•฀Before installation, remove the protective cov-
er from the valve ports.
•฀Check that the valve ports and the O-rings are
in the correct position.
•฀Use fastening screws as indicated in the cata-
logue, property class 12.9 to ISO 4762.
Parker can supply the correct screw sets, see
the catalogue for order numbers.
•฀Tighten the screws diagonally, torque as spec-
ified in the catalogue.
•฀Any deficiencies of the valve mounting surface
may result in operating disruptions. Faulty fix-
ing and incorrect screw tightening torques may
lead to the sudden escape of hydraulic fluid at
the ports.
•฀The valve must be connected to the equipo-
tential bonding system of the hydraulic system.
Electrical connection
Observe operating instructions D14-2115D and
K14-2069D in the annex.
Operation limits
The valve may only be deployed with the specified
limits of use. The relevant details can be found in
the catalogue sheet under "Technical data" and
"Characteristic curves".
Observe the ambient conditions. Unauthor-
ised temperatures, shocks, the effects of
aggressive chemicals,radiation,unauthorised
electromagnetic emissions may result in
disruptions and failures. Observe the limits
of operation set out in "Technical data".
Excessive temperatures may cause the
solenoid to overheat, creating the risk of ex-
plosion.To permit adequate heat dissipation,
the solenoid coil should not be painted.
Pressure fluids
For details of valve operation using different pres-
sure fluids, see HY11-AL103-M1.
Thedetailsgivenhereareprovidedforinforma-
tion only and do not replace in-house testing
under the applicable operating conditions. In
particular, the details cannot be interpreted
as a guarantee of media compatibility.
For detailed information about pressure flu-
ids, see VDMA sheet 24317 and DIN 51524,
51502.Specialsealingmaterials aresupplied
depending on the fluid used. Please ask the
factory if you are unsure.
The pressure fluid must have an ignition tempera-
ture of at least 50 K above the maximum surface
temperature of the valve (see EN 13463-5 and
IEC 60079-4).

18
Pilot Operated Proportional DC Valve
Series D*W*EE Explosion Proof
Operating Instructions
Parker Hannifin Corporation
Hydraulics Group
D_W_EE_92 5715-681 UK.indd CM 07.05.13
Size 16, mounting pattern ISO 4401-07-07-0-05
Size 10, mounting pattern ISO 4401-05-05-0-05
With * marked dimensions ± 0.1mm.
All other dimensions ± 0.2mm.

Pilot Operated Proportional DC Valve
Series D*W*EE Explosion Proof
Operating Instructions
19 Parker Hannifin Corporation
Hydraulics Group
D_W_EE_92 5715-681 UK.indd CM 07.05.13
Size 25, mounting pattern ISO 4401-08-08-0-05
Size 32, mounting pattern ISO 4401-10-09-0-05
With * marked dimensions ± 0.1mm.
All other dimensions ± 0.2mm.

20
Pilot Operated Proportional DC Valve
Series D*W*EE Explosion Proof
Operating Instructions
Parker Hannifin Corporation
Hydraulics Group
D_W_EE_92 5715-681 UK.indd CM 07.05.13
5. Operating instructions
Air bleeding of hydraulic system
The hydraulic system must be vented on initial
commissioning, after an oil change or after lines
or valves are opened. Air in the hydraulic system
is highly detrimental to the behaviour of the control
system and is therefore undesirable. Air bleeding
takes place at the highest point of the pipe network.
Loosen the vent screw slightly, allowing air to es-
cape until oil flows. When the escaping oil no long-
er contains air bubbles, tighten the screw again.
Then work through all functions in succession, in
no-load operation with the lowest possible pres-
sure, and with the full consumer range.Finally, vent
the system again.
After air bleeding, check the oil level in the
tank and top up with oil if necessary.
Filter
The operation and service life of the valve are
highly dependent on the cleanliness of the pres-
sure fluid.
Dirtisthe biggestenemyof ahydraulicsystem.
Be aware of three important sources of contam-
ination:
•฀impurities entering during installation
•฀impurities occurring during operation, abrasion
•฀dirt entering from the surroundings
Pressure filters must always be used with propor-
tional valves.For actual values, see the data sheet.
Follow the maintenance instructions.
Flushing
With large central pressurised oil stations in
particular, you are recommended to flush the
longpipesbyshort circuitingthepressure and
return lines.
This prevents the dirt occurring during instal-
lation from being carried to the valve.
6. Maintenance
Maintenance procedures may only be car-
ried out by specialist personnel. A detailed
knowledge is required of how the machine is
switched on and off and also of the necessary
safety measures.
Regular maintenance is essential in prolonging
the service life of the systems, and safeguards
plant safety and operational availability. The fol-
lowing items must be checked at regular and short
intervals:
•฀Oil level in tank
•฀Max. medium temperature
•฀Max. surface temperature
•฀Condition of the pressure fluid (sight check, col-
our and smell of hydraulic fluid)
•฀Operating pressures
•฀Preload pressure of pressure vessel (if present)
•฀No leaks at any system components
•฀Condition of the filter elements
•฀Condition of the hose lines
•฀Cleanliness of components
After a certain period of service, the hydraulic flu-
id must be replaced. The frequency of the change
depends on the following circumstances:
•฀Type and grade of pressure fluid (ageing)
•฀Filtration
•฀Operating temperature and ambient conditions