Explosion Proof (Flameproof) Type Solenoid Operated
Directional Valves“Even if explosive gas invasion from outside into vessel cause internal ignition orexplosion, substantially isolate ignition source in vessel by special elaborating to vessel
structure for avoiding any bad influence externally.” is the point of pressure &explosion proof construction.
On this point of view, YUKEN's Explosion Proof Type Solenoid Operated Directional
Valves involve solenoid and receptacle in the vessel with all closed pressure proofstructure.
If explosion of explosive gas happened in vessel, the vessel could stand the pressure
and there is no danger to ignite external explosive gas.
Usable at the danger zone 1 & 2.

DSG−01■ Type of Explosion Proofｄ2 G4Ignition Temperature……Apply for the ignition temperature range
over 135 ℃ to under 200 ℃
Class of Explosion……Spatium having flame propagation at 25 mm depth,
the minimum value over 0.4 mm to under 0.6 mm.
Pressure & Explosion Proof Construction

DSG−03■ Technology Institution of Industrial Safety Certificate Number
Model Numbers
DSG−01

Certificate Number

Threaded ConduitConnection

Pressure Proof Packing
TypeT67047

T67036

DSG−03

T67046

T67037■ Specifications
Model Numbers

Max. Flow★
L/min

Max. Operating Pressure
MPaMax. T-Line
Back Pressure
MPa

DSG−01−3C＊−＊X＊−70
DSG−01−2D2−＊X＊−70

100

3514

DSG−01−2B＊−＊X＊−70
DSG−03−3C＊−＊X＊−51
DSG−03−2D2−＊X＊−51
DSG−03−2B＊−＊X＊−51

120

31.5

Spool Type 60 Only
2516

Max. Changeover
Frequency
min−1
300：With DC Solenoid
120：With R Solenoid
240：With DC Solenoid
120：With R Solenoid★ The maximum flow means the limited flow without inducing any abnormality to the operation (changeover) of the valve.
The maximum flow differs according to the spool type and operating conditions. For details, please contact us.

E-66Explosion Proof (Flameproof) Type Solenoid Operated Directional Valves

Masskg
7.75
7.75
4.35
18.2
18.2
10.2

DIRECTIONAL CONTROLS■ Interchangeability in Installation between Current and New Design

For further improvement of reliability, Explosion Proof Type Solenoid Operated Directional Valves have been upgraded as below.
DSG-01：50 Design → 70 Design
DSG-03：50 Design → 51 Design● Cable Departure
As of threaded conduit connection type, add sealing fitting on the cable departure. With this arrangement, the certificate number also changed.
Certificate Number(New)(Current)

Threaded Conduit
Connection Type

Pressure Proof Packing
Type

DSG-01

T32873

T67046

T67037

DSG-03

T43853

T67047

T67036● Specifications / Characteristics
DSG-01 models improve high pressure and high flow.
Model Numbers

Max. Flow
L/min

Max. Operating
Pressure
MPa(New) 70 Design

100

35(Current) 50
Design3531.5（3C60：25）

Max. T-Line Back
Pressure
MPa14

Max. Changeover
Frequency
min-1

Mass kg
3C＊/2D＊

2B＊

300：With DC Solenoid
120：With R Solenoid

7.75

4.35120

7.3

4.1

DSG-03 have no changes between current and new models.

● Interchangeability in Installation between Current and New Design
There are some changes in dimensions concerned sealing fitting, but there is interchangeability in installation between current and new design.

――― Please contact us for details about Explosion Proof (Flameproof) Type Solenoid Operated Directional Valves. ―――

Explosion Proof (Flameproof) Type Solenoid Operated Directional Valves

EExplosion Proof (Flameproof) Type

Model Numbers

E-67

Explosion Proof (Increased Safety) Type Solenoid
Operated Directional Valves“As of electrical machinery which has no spark parts or hot section being ignition
source, especially increase safety and avoid trouble - Increased Safety of Electrical
Machinery with No Spark” is the point of explosion proof (increased safety)
construction.
On this point of view, YUKEN's Explosion Proof (Increased Safety) Type Solenoid
Operated Directional Valves increased safety about high temperature, isolation andlocking mechanism.
But explosion proof in case of internal trouble is not guaranteed, so please decide
propriety of use considering about surround conditions and maintenance management.
Please use at the danger zone 2 in general, not recommend to use at zone 1.

DSG−01■ Type of Explosion ProofｅＧ3Ignition Temperature……Apply for the ignition temperature range over
200 ℃ to under 300 ℃Explosion Proof (Increased Safety) Construction
DSG−03■ Technology Institution of Industrial Safety Certificate Number● DSG−01 …… With DC Solenoid : T48037
With AC Solenoid : T48038(Rectifier Incorporated Type)● DSG−03 …… With DC Solenoid : T47687
With AC Solenoid : T47688(Rectifier Incorporated Type)―― Please contact us for details about Explosion Proof (Increased Safety) Type Solenoid Operated Directional Valves. ――■ Specifications
Max. Flow★
L/min

Model Numbers
DSG−01−3C＊−＊Y＊−51
DSG−01−2D2−＊Y＊−51

63

DSG−01−2B＊−＊Y＊−51
DSG−03−3C＊−＊Y＊−50
DSG−03−2D2−＊Y＊−50
DSG−03−2B＊−＊Y＊−50

120

Max. Operating Pressure
MPa
31.5

Spool Type 60 Only
25

31.5

Spool Type 5 & 60 Only
25

Max. T-Line BackPressure
MPa

1616

Max. Changeover
Frequency
min−1
240：With DC Solenoid
120：With R Solenoid
240：With DC Solenoid
120：With R Solenoid★ Maximum flow indicates a ceiling flow to keep valve operation (changeover) normal.
It depends on the type of spool and operating condition, please contact us for details.

E-68

Explosion Proof (Increased Safety) Type Solenoid Operated Directional Valves

Masskg
2.8
2.8
2.2
5.8
5.8
4.4