81 515/116 ED

1/8

— ZDE3K*are direct operated pressure reducing valves,

with electric proportional control, with ISO 4401-03

mounting surface.

— They are compliant with ATEX, IECEx and INMETRO

requirements and are suitable for use in potentially

explosive atmospheres, for surface plants or mines.

— A low temperature version (up to - 40 °C) is also

available.

— The valves are used to reduce pressure in the

secondary circuit branches thus ensuring stability of

controlled pressure in the event of variations of the ﬂow

rate through the valve.

— ZDE3K* valves are supplied with a ﬁnishing surface

treatment (zinc-nickel) suitable to ensure a salt spray

resistance up to 600 hours.

— Details for classification, operating temperatures

and electrical characteristics are in the technical

data sheet 02 500 ‘Explosion proof classification’.

ZDE3K*

EXPLOSION-PROOF

PRESSURE REDUCING VALVES

ATEX, IECEx, INMETRO

SERIES 10

HYDRAULIC SYMBOLS

OPERATING PRINCIPLE

81 515/116 ED

SUBPLATE MOUNTING

ISO 4401-03

p max

100 bar

Q max 15 l/min

Pressure allowed in P port bar 30 ÷ 100

Pressure allowed in T port (see par. 3) bar 0 ÷ 30

Controlled pressure bar 23

Maximum ﬂow l/min 15

Step response ms 30

Hysteresis (with PWM 200 Hz) % of p nom < 4%

Repeatability % of p nom < ±1%

Electrical characteristic see paragraph 4

Operating temperatures

(ambient and ﬂuid)

see data sheet 02 500

Fluid viscosity range cSt 10 ÷ 400

Fluid contamination degree

According to ISO 4406:1999 class 18/16/13

Recommended viscosity cSt 25

Mass: single solenoid valve

double solenoid valve

1,9

2,8

PERFORMANCES

(obtained with mineral oil with viscosity of 36 cSt at 50°C and electronic control card)

ZDE3K*-D

ZDE3K*-SB

ZDE3K*-SA

81 515/116 ED

2/8

ZDE3K*

SERIES 10

1 - IDENTIFICATION CODE

Series No.

(from 30 to 39 sizes and mounting dimensions

remain unchanged)

Electric proportional

control

Size ISO 4401-03

Solenoids:

D = pressure reduction in A and B ports

SA = pressure reduction in A port (solenoid on side B)

SB = pressure reduction in B port (solenoid on side A)

Pressure reducing

valve:

Option: /T5

version in T5

temperature class.

Omit if not required.

Nominal solenoid voltage

D12 = 12 V DC

D24 = 24 V DC

Explosion-proof certification:

See table 1.1

NOTE: zinc-nickel standard finishing surface treatment.

Test operated according to UNI EN ISO 9227 standards and test

evaluation operated according to UNI EN ISO 10289 standards.

Connection type for cable gland

upper connection:

T01 = M20x1.5 - ISO 261

T02 = Gk 1/2 - UNI EN 10226 -2

not available for INMETRO

T03 = 1/2” NPT - ANSI B1.20.1 (ex ANSI B2.1)

side connection:

S01 = M20x1.5 - ISO 261

S02 = Gk 1/2 - UNI EN 10226 -2

not available for INMETRO

S03 = 1/2” NPT - ANSI B1.20.1 (ex ANSI B2.1)

S04 = M16x1.5 - ISO 261

Seals:

For temperature range -20 / +80 °C

N = NBR seals for mineral oil (standard)

V = FPM seals for special fluids

For temperature range -40 / +80 °C

NL = seal for low temperatures (for mineral oil)

Coil electrical connection: by terminal block

Manual override:

CM = boot protected

standard for both N and V seals

not available for NL seals

CB = blind ring nut

standard for NL seals

available upon request for both N

and V seals

see paragraph 8

Z D E 3 - / 10 - /K9

1.1 - Names of valves per certification

ATEX IECEx INMETRO

for gases

for dusts

KD2 II 2GD KXD2

IECEx Gb

IECEx Db

KBD2

INMETRO Gb

INMETRO Db

for mines KDM2 I M2 KXDM2 IECEx Mb KBDM2 INMETRO Mb

NOTE: Refer to the technical data sheet 02 500 for marking, operating temperatures and available versions.

3 - STEP RESPONSE

(obtained with mineral oil with viscosity of 36 cSt at 50°C and electronic control card)

Step response is the time taken for the valve to reach 90% of the

set pressure value following a step change of reference signal.

The table illustrates typical step response times measured with

input flow rate of Q = 5 l/min and p = 50 bar.

81 515/116 ED

3/8

ZDE3K*

SERIES 10

PRESSURE CONTROL p=f (I) PRESSURE VARIATION p = f(Q)

SA and SB versions pressure regulation is less than 0.5 bar. The curves have been obtained with inlet pressure 100 bar.

PRESSURE DROP ∆p = f(Q)

2 - CHARACTERISTIC CURVES

(obtained with ZDE3K*-D/10N-D24K9T01/CM with PWM 100Hz and oil with viscosity 36 cSt at 50°C)

REFERENCE SIGNAL STEP

0 → 100% 100% → 0

response time [ms] 30 30

DUTY CYCLE

100%

ELECTROMAGNETIC COMPATIBILITY

(EMC)

According to

2014/30/EU

CLASS OF PROTECTION:

Atmospheric agents

Coil insulation (VDE 0580)

IP66 / IP68

class H

4 - ELECTRICAL CHARACTERISTICS

(values ± 5%)

NOMINAL VOLTAGE

V DC

12 24

RESISTANCE (at 20°C)

Ω 3.4 15.6

NOMINAL CURRENT

A 1.88 0.86

PWM FREQUENCY

Hz 200 100

81 515/116 ED

4/8

ZDE3K*

SERIES 10

4.2 - Electrical diagram 4.3 - Overcurrent fuse and switch-off voltage peak

Upstream of each valve, an appropriate fuse (max 3 x In according

to IEC 60127) or a protective motor switch with short-circuit and

thermal instantaneous tripping, as short-circuit protection, must be

connected. The cut-off power of the fuse must correspond or

exceed the short circuit current of the supply source.

The fuse or the protective motor must be placed outside the

dangerous area or they must be protected with an explosion-proof

covering.

In order to safeguard the electronic device to which the valve is

connected, there is a protection circuit in the coil, that reduces

voltage peaks, which can occur when inductances are switched off.

The table shows the type of fuse recommended according to the

nominal voltage of the valve and to the value of the voltage peaks

reduction.

Characteristics of the cables connectable for wiring are indicated in the table below:

Cables for wiring must be non-armoured cables, with external covering sheath and must be suitable for use in environments with temperatures

from - 20 °C to +110 °C (for valves either with N or V seals) or from - 40 °C to +110 °C (for valves with NL seals).

Cable glands (which must be ordered separately, see paragraph 10) allow to use cables with external diameter between 8 and 10 mm.

Function Cable section

Operating voltage cables connection max 2.5 mm²

Connection for internal grounding point max 2.5 mm²

Connection for external equipotential grounding point max 6 mm²

Coil type

Nominal

voltage

[V]

Rated

current

[A]

Recommended pre-fuse characteristics

medium time-lag according to DIN 41571

[A]

Maximum voltage

value upon switch off

[V]

Suppressor circuit

D12 12 1,88 2,5 - 49

Transient voltage

suppressor

bidirectional

D24 24 0,86 1,25 - 49

recommended

upstream fuse

(see par. 4.3)

4.1 - Wiring

In order to realise the electrical connection of the coil, it is necessary to access the terminal block (1) unscrewing the 4 screws (2) that fasten

the cover (3) with the box (4) that contains the terminal block.

The electrical connection is polarity-independent.

By doing electrical connection it is important to connect also the grounding point (5) in the terminal block box (M4 screws), through suitable

conductors with the general grounding line of the system.

On the external body of the coil there is a grounding point (6) (M4 screw) that allow to ensure equipotentiality between the valve and the

general grounding line of the system; connecting this point the regulation of the EN 13463-1 standard, that impose to verify the equipotentiality

of the elements included in a potentially explosive environment (the maximum resistance between the elements must be 100 Ω), is

guaranteed.

At the end of the electrical wiring, it is necessary to reassemble the cover (3) on the box (4), checking the correct positioning of the seal located

in the cover seat and fastening the 4 M5 screws with a torque of 4.9 ÷ 6 Nm.

Electrical wiring must be done following in compliance with standards about protection against explosion hazards.

*K9T* *K9S*

81 515/116 ED

5/8

ZDE3K*

SERIES 10

88.5

255

7.5

11. 2

1.5

22.5

67.3

109.9

168

22.5

1.5

5 - OVERALL AND MOUNTING DIMENSIONS

dimensions in mm

ZDE3K*- D/10*-*K9T */CM

1 Mounting surface with sealing rings

4 OR type 2037 (9.25x1.78) - 90 Shore

2 Explosion-proof coil

3 Minimum clear space required

4 Manual override, boot protected

(standard for both N and V seals)

for blind ring nut dimensions (standard

with NL seals) see par. 8

5 Terminal for supplementary GND

connection

6 Upper port for cable gland

7 Cable gland

To be ordered separately, see par. 9

8 Side port for cable gland

Solenoid position

for SA versions

ZDE3K*-*/10*-*K9S*/CM

ZDE3K*- SB*/10*-*K9T */CM

Side port type A

S01, S04 60.5

S02, S03 60

Fastening of single valve: 4 SHC screws ISO 4762 M5x30

Tightening torque: 5 Nm (A8.8 screws)

Threads of mounting holes: M5x10

80.6

81 515/116 ED

6/8

ZDE3K*

SERIES 10

8 - MANUAL OVERRIDE CB

CB - Blind ring nut

The metal ring nut protects the solenoid tube from atmospheric

agents and isolates the manual override from accidental

operations. The ring nut is tightened on a threaded fastener

that keeps the coil in its position even without the ring nut.

To access the manual override loose the ring nut and remove

it; then reassemble hand tightening, until it stops.

Activate the manual override always and only with non-

sparking tools suitable for use in potentially explosive

atmospheres.

More information on safe use of explosion-proof components

are provided in the instruction manual, always supplied with

the valve.

CAUTION!: The manual override doesn't allow any

proportional regulation; indeed using this kind of

override, the main stage spool will open

completely and the whole inlet pressure will pass

through A or B line.

78.5

6 - 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 fluid types 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.

7 - INSTALLATION

Installation must adheres to instructions reported in the Use and Maintenance manual, always attached to the valve.

Unauthorized interventions can be harmful to people and goods because of the explosion hazards present in potentially

explosive atmospheres.

The valves can be installed in any position without impairing correct operation.

Ensure that there is no air in the hydraulic circuit.

Connect the valve T port directly to the tank. Add any backpressure value detected in the T line to

the reduced pressure value.

In the T line the maximum admissible backpressure is 30 bar, under operational conditions.

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 finishing

81 515/116 ED

7/8

ZDE3K*

SERIES 10

9 - CABLE GLANDS

Cable glands must be ordered separately; Duplomatic offers some types of cable glands with the following features:

• version for non-armoured cable, external seal on the cable (suitable for Ø 8 ÷10 mm cables);

• ATEX II 2GD, I M2; IECEx Gb, Db, Mb; INMETRO Gb, Db, Mb certified

• cable gland material: nickel brass

• rubber tip material: silicone

• ambient temperature range: -70ºC ÷ +220ºC

• protection degree: IP66/IP68

• tightening torque: 15 Nm

To order, list the description and the code of the version chosen from among those listed below:

Description: CGK2/NB-01/10

Code: 3908108001

M20x1.5 - ISO 261 male thread, suitable for coils with T01 and S01

connections. It is supplied equipped with silicone seal, that must be

assembled between the cable gland and the coil, so as to ensure

IP66/IP68 protection degree.

Description: CGK2/NB-02/10

Code: 3908108002

Gk 1/2 - UNI EN 10226-2 male thread, suitable for coils with T02

and S02 connections. The customer must apply LOCTITE® 243™

threadlocker or similar between the cable gland connection thread

and the coil in order to ensure IP66/IP68 protection degree.

Description: CGK2/NB-03/10

Code: 3908108003

1/2” NPT - ANSI B1.20.1 (ex ANSI B2.1), suitable for coils with T03

and S03 connections. The customer must apply LOCTITE® 243™

threadlocker or similar between the cable gland connection thread

and the coil in order to ensure IP66/IP68 protection degree.

Description: CGK2/NB-04/10

Code: 3908108004

M16x1.5 - ISO 261 male thread, suitable for coils with S04

connection. It is supplied equipped with silicone seal, that must be

assembled between the cable gland and the coil, so as to ensure

IP66/IP68 protection degree.

EDM-M111 for solenoid 24V DC

DIN EN 50022

rail mounting

see cat.

89 250

EDM-M142 for solenoid 12V DC

ZDE3K*- D*

ZDE3K*- SA* ZDE3K*- SB*

EDM-M211 for solenoid 24V DC

DIN EN 50022

rail mounting

see cat.

89 250

EDM-M242 for solenoid 12V DC

10 - ELECTRONIC CONTROL UNITS

11 - SUBPLATES

(see catalogue 51 000)

Type PMMD-AI3G with rear ports

Type PMMD-AL3G with side ports

P, T, A, B port threading: 3/8” BSP

NOTE: Subplates (to be ordered separately) do not contain

neither aluminium nor magnesium at a higher rate than the

value allowed by norms according to ATEX directive for

categories II 2GD and I M2 .

The user must take care and make a complete assessment

of the ignition risk, that can occur from the relative use in

potentially explosive environments.

NOTE: electronic control units offered are not explosion

proof certified; therefore, they must be installed outside

the classified area.

81 515/116 ED

8/8

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

ZDE3K*

SERIES 10

REPRODUCTION IS FORBIDDEN. THE COMPANY RESERVES THE RIGHT TO APPLY ANY MODIFICATIONS.

02 500/116 ED

1/6

02 500/116 ED

EXPLOSION-PROOF

CLASSIFICATION

for

SOLENOID ANDPROPORTIONALVALVES

ref. catalogues:

pressure valves

RQM*K*-P* 21 515

PRE(D)*K* 81 315

ZDE3K* 81 515

DZCE*K* 81 605

directional valves

D*K* 41 515

DS(P)E*K* 83 510

GENERAL INFO

This informative technical datasheet displays information about

classification and marking of Duplomatic explosion-proof valves

range.

Duplomatic offers valves with the following certifications:

ATEX II 2G II 2D I M2

IECEx Gb Db Mb

INMETRO Gb Db Mb

Instructions for use and maintenance can be found in the related

manuals, always supplied toghether with valves.

02 500/116 ED

2/6

DZCE*K*

SERIES 11

1 - ATEX CLASSIFICATION AND TEMPERATURES

Duplomatic certificates the combination valve-coil for the valves suitable for application and installation in potentially explosive atmospheres,

according to ATEX directive; the supply always includes the declaration of conformity to the directive and the operating and maintenance

manual, that contains all the information needed for a correct use of the valve in potentially explosive environments.

Coils assembled on these valves have been separately certified according to ATEX directive and so they are suitable for use in potentially

explosive atmospheres.

1.1 - ATEX classification for valves

Type examination certificate: CEC 13 ATEX 030-REV.2

The valves are suitable for applications and installations in potentially explosive atmospheres that fall within:

1.2 - ATEX marking for valves

ATEX II 2G

ATEX II 2D

*KD2

equipment intended for use in areas in which explosive atmospheres caused by gases, vapours, mists or

air/dust mixtures are likely to occur occasionally.

ATEX I M2 *KDM2

equipment intended for use in underground parts of mines as well as those parts of surface installations of

such mines likely to be endangered by firedamp and/or combustible dust.

This equipment is intended to be de-energised in the event of an explosive atmosphere.

Specific marking as ATEX 2014/34/EU directive and related technical specifications

Temperature class / max surface temperature

see par. 1.5

Protection degree from atmospheric agents

according to IEC EN 60529

(this field is not intended for category 2G)

Ambient temperature range

EPL protection level for electrical devices

T4__

IP66/IP68

(- °C Ta + °C)

Group:

I = mining equipment

II = for surface plants

valve

code

N and V seals NL seals

*KD2

for gas

II 2G IIC T4 Gb (-20°C Ta +80°C) II 2G IIC T4 Gb (-40°C Ta +80°C)

for dusts

II 2D IIIC T154°C Db IP66/IP68 (-20°C Ta +80°C) II 2D IIIC T154°C Db IP66/IP68 (-40°C Ta +80°C)

*KD2 /T5

for gas

II 2G IIC T5 Gb (-20°C Ta +55°C) II 2G IIC T5 Gb (-40°C Ta +55°C)

for dusts

II 2D IIIC T129°C Db IP66/IP68 (-20°C Ta +55°C) II 2D IIIC T129°C Db IP66/IP68 (-40°C Ta +55°C)

*KDM2 mining

I M2 I T150°C Mb IP66/68 (-20°C Ta +75°C) I M2 I T150°C Mb IP66/68 (-40°C Ta +75°C)

Group of gas / dusts for which the equipment is certified

I = for mining: firedamp and/or combustible dusts

IIC = for gas - eligible also for group IIA and IIB

IIIC = for dusts - eligible also for group IIIA and IIIB

Category of protection:

M2 = (mining) high protection

This equipment is intended to be de-energised

in the event of an explosive atmosphere

2G = (surface, atmosphere with gas)

high protection

eligible for category 2 (zone 1)

automatically liable for category 3 (zone 2)

2D = (surface, atmosphere with dusts)

high protection

eligible for category 2 (zone 21)

automatically liable for category 3 (zone 22)

02 500/116 ED

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DZCE*K*

SERIES 11

Group:

I = mining equipment

II = equipment for surface plants

Specific marking as ATEX 2014/34/EU directive and related technical specifications

Temperature class / max surface temperature

see par. 1.5

Protection degree from atmospheric agents

according to IEC EN 60529 (this field is not

intended for category 2G)

Ambient temperature range

EPL protection level for electrical devices

T4__

IP66/IP68

(- °C Ta + °C)

1.5 -

Operat

ing t

emperat

ures

These valves are classified according to their maximum surface temperature (EN 13463-1), which must be lower than the ignition temperature

f th

, v

r w

ch they will be used is classified.

II c

r l

temperature classes (surface temperature allowed higher).

temperature range N and V seals NL seals Temperature class eligible also for

ATEX II 2G

ATEX II 2D

*KD2

of ambient

-20 / +80 °C - 40 / +80 °C

T4 (gas)

T154°C (dusts)

T3, T2, T1

T200°C and higher

of fluid

*KD2 /T5

of ambient -20 / +55 °C - 40 / +55 °C

T5 (gas)

T129°C (dusts)

T4, T3, T2, T1

T135°C and higher

of fluid -20 / +60 °C - 40 / +60 °C

ATEX I M2 *KDM2

of ambient

-20 / +75 °C - 40 / +75 °C T150°C -

of fluid

for valve type

*KD2

for gas

II 2G Ex d IIC T4 Gb (-40°C Ta +80°C)

for dusts

II 2D Ex tb IIIC T154°C Db IP66/IP68 (-40°C Ta +80°C)

for valve type

*KD2 /T5

for gas

II 2G Ex d IIC T5 Gb (-40°C Ta +55°C)

for dusts

II 2D Ex tb IIIC T129°C Db IP66/IP68 (-40°C Ta +55°C)

for valve type

*KDM2

mining

I M2 Ex d I T150°C Mb IP66/IP68 (- 40°C Ta +75°C)

Group of gas / dusts for which the equipment is certified

I = for mining: firedamp and/or combustible dusts

IIC = for gas - eligible also for group IIA and IIB

IIIC = for dusts - eligible also for group IIIA and IIIB

Category of protection:

M2 = (mining) high protection

This equipment is intended to be de-energised

in the event of an explosive atmosphere

2G = (surface, atmosphere with gas)

high protection

eligible for category 2 (zone 1)

automatically liable for category 3 (zone 2)

2D = (surface, atmosphere with dusts)

high protection

eligible for category 2 (zone 21)

automatically liable for category 3 (zone 22)

1.3 - ATEX classification of the coils

The coil of the explosion-proof valves is ATEX certified itself an as such is identified with its own tag, carries the relative ATEX marking.

The mechanical construction of the coil housing is made in order to ensure its resistance to possible internal explosion and to avoid

any explosion propagation to the outside environment, matching an “Ex d” type protection (explosion-proof coil).

Moreover, the solenoid is designed to maintain its surface temperature below the limits specified to the relevant class.

1.4 - ATEX marking on coils

Coil protection type:

d = flameproof enclosure

tb = protection from dust by enclosure

02 500/116 ED

4/6

DZCE*K*

SERIES 11

Protection type:

db = flameproof enclosure

tb = protection from dust by enclosure

2.3 -

Oper

ati

ng temp

These valves are classified according to their maximum surface temperature (EN 13463-1), which must be lower than the ignition temperature

f th

, v

r w

they will be used is classified.

r s

rfa

r l

temperature classes (higher surface temperature allowed).

temperature range N and V seals NL seals Temperature class eligible also for

IECEx Gb

IECEx Db

*KXD2

of ambient

-20 / +80 °C - 40 / +80 °C

T4 (gas)

T135°C (dusts)

T3, T2, T1

T200°C and higher

of fluid

*KXD2 /T5

of ambient -20 / +55 °C - 40 / +55 °C

T5 (gas)

T100°C (dusts)

T4, T3, T2, T1

T135°C and higher

of fluid -20 / +60 °C - 40 / +60 °C

IECEx Mb *KXDM2

of ambient

-20 / +80 °C - 40 / +80 °C - -

of fluid

2 - IECEx CLASSIFICATION AND TEMPERATURES

The IECEx certification requires the classification of the electrical equipment only.

Duplomatic supplies valves with IECEx certified coils, suitable for application and installation in potentially explosive atmospheres. The

mechanical construction of the coil housing is made in order to ensure its resistance to possible internal explosion and to avoid any explosion

propagation to the outside environment, matching an “Ex db” type protection (explosion-proof coil).

Moreover, the solenoid is designed to maintain its surface temperature below the limits specified to the relevant class.

The supply always includes the operating and maintenance manual, that contains all the information needed for a correct use of the

valve in potentially explosive environment.

2.1 - IECEx classification

Certificate of conformity (CoC): IECEx TUN 15.0028X

The valves are suitable for applications and installations in potentially explosive atmospheres that fall within:

2.2 - IECEx marking

There is a plate with the IECEx mark on each coil.

IECEx Gb

IECEx Db

*KXD2

equipment intended for use in areas in which explosive atmospheres caused by gases, vapours, mists or

air/dust mixtures are likely to occur occasionally.

IECEx Mb *KXDM2

equipment intended for use in underground parts of mines as well as those parts of surface installations of

such mines likely to be endangered by firedamp and/or combustible dust.

This equipment is intended to be de-energised in the event of an explosive atmosphere.

Conformity marking to the IECEx certification scheme

Temperature class / max surface temperature see par. 2.3

Ambient temperature range

EPL - protection level for electrical devices

Mb = for mines - having a "high" level of protection, which has

sufficient security that it is unlikely to become a source of ignition in

normal operation or during expected malfunctions in the time span

between there being an outbreak of gas and the equipment being de-

energized.

Gb = for explosive gas atmospheres - having a "high" level of

protection, which is not a source of ignition in normal operation or

during expected malfunctions.

Db = equipment for explosive dust atmospheres - having a "high" level

of protection, which is not a source of ignition in normal operation or

during expected malfunctions

*KXD2

valves

for gas Ex db IIC T4 Gb (-40°C Ta +80°C)

for dusts Ex tb IIIC T135°C Db (-40°C Ta +80°C)

*KXD2 /T5

valves

for gas Ex db IIC T5 Gb (-40°C Ta +55°C)

for dusts Ex tb IIIC T100°C Db (-40°C Ta +55°C)

*KDM2

valves

mining Ex db I Mb (-40°C Ta +80°C)

Group of gas / dusts for which the equipment is certified

I = for mining: firedamp and/or combustible dusts

IIC = for gas - eligible also for group IIA and IIB

IIIC = for dusts - eligible also for group IIIA and IIIB

T4__

M (- °C Ta + °C)

02 500/116 ED

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DZCE*K*

SERIES 11

Protection type:

d = flameproof enclosure

tb = protection from dust by enclosure

3.3 -

Oper

ati

ng temp

These valves are classified according to their maximum surface temperature (EN 13463-1), which must be lower than the ignition temperature

f th

, v

r w

ch they will be used is classified.

r s

rfa

r l

ng temperature classes (higher surface temperature allowed).

temperature range N and V seals NL seals Temperature class eligible also for

INMETRO Gb

INMETRO Db

*KBD2

of ambient

-20 / +80 °C - 40 / +80 °C

T4 (gas)

T154°C (dusts)

T3, T2, T1

T200°C and higher

of fluid

*KBD2 /T5

of ambient -20 / +55 °C - 40 / +55 °C

T5 (gas)

T129°C (dusts)

T4, T3, T2, T1

T135°C and higher

of fluid -20 / +60 °C - 40 / +60 °C

INMETRO Mb *KBDM2

of ambient

-20 / +75 °C - 40 / +75 °C T150°C -

of fluid

3 - INMETRO CLASSIFICATION AND TEMPERATURES

The INMETRO certification requires the classification of the electrical equipment only.

Duplomatic supplies valves with INMETRO certified coils, suitable for application and installation in potentially explosive atmospheres.

The mechanical construction of the coil housing is made in order to ensure its resistance to possible internal explosion and to avoid any

explosion propagation to the outside environment, matching an “Ex d” type protection (explosion-proof coil).

Moreover, the solenoid is designed to maintain its surface temperature below the limits specified to the relevant class.

The supply always includes the operating and maintenance manual, that contains all the information needed for a correct use of the

valve in potentially explosive environment.

3.1 - INMETRO classification

Certificate of conformity: DNV 15.0094 X

The valves are suitable for applications and installations in potentially explosive atmospheres that fall within:

3.2 - INMETRO marking

There is a plate with the INMETRO mark on each coil.

Conformity marking to the INMETRO certification scheme

Temperature class / max surface temperature see par. 3.3

Ambient temperature range

EPL - protection level for electrical devices

Mb = for mines - having a "high" level of protection, which has

sufficient security that it is unlikely to become a source of ignition in

normal operation or during expected malfunctions in the time span

between there being an outbreak of gas and the equipment being de-

energized.

Gb = for explosive gas atmospheres - having a "high" level of

protection, which is not a source of ignition in normal operation or

during expected malfunctions.

Db = equipment for explosive dust atmospheres - having a "high" level

of protection, which is not a source of ignition in normal operation or

during expected malfunctions

*KBD2

valves

for gas Ex d IIC T4 Gb (-40°C Ta +80°C)

for dusts Ex tb IIIC T154°C Db IP66/IP68 (-40°C Ta +80°C)

*KBD2 /T5

valves

for gas Ex d IIC T5 Gb (-40°C Ta +55°C)

for dusts Ex tb IIIC T129°C Db IP66/IP68 (-40°C Ta +55°C)

*KBDM2

valves

mining Ex d I T150° Mb IP66/IP68 (-40°C Ta +75°C)

Group of gas / dusts for which the equipment is certified

I = for mining: firedamp and/or combustible dusts

IIC = for gas - eligible also for group IIA and IIB

IIIC = for dusts - eligible also for group IIIA and IIIB

II T4__ M

INMETRO Gb

INMETRO Db

*KBD2

equipment intended for use in areas in which explosive atmospheres caused by gases, vapours, mists or

air/dust mixtures are likely to occur occasionally.

INMETRO Mb *KBDM2

equipment intended for use in underground parts of mines as well as those parts of surface installations of

such mines likely to be endangered by firedamp and/or combustible dust.

This equipment is intended to be de-energised in the event of an explosive atmosphere.

(- °C Ta + °C)

Protection degree from atmospheric agents according to

IEC EN 60529 (this field is not intended for gases)

IP66/IP68

02 500/116 ED

6/6

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

DZCE*K*

SERIES 11

REPRODUCTION IS FORBIDDEN. THE COMPANY RESERVES THE RIGHT TO APPLY ANY MODIFICATIONS.