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Explosion Isolation Electro-hydraulic Directional Control Valve
Explosion Isolation Electro-hydraulic Directional Control Valve
Technical specification
|
Specification |
03 |
04 |
06 |
10 |
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|
GDFWH |
HGDFWH |
GDFWH |
HGDFWH |
GDFWH |
HGDFWH |
GDFWH |
HGDFWH |
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Max. Working pressure (MPa) |
Oil ports |
P, A, B |
28 |
35 |
28 |
35 |
28 |
35 |
28 |
35 |
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Oil port T |
Pilot oil drain, Y external |
10 |
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Pilot oil drain, Y internal |
25 |
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Oil port Y |
10 |
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Max. Flow (L/min) |
160 |
300 |
650 |
1100 |
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Minimum control pressure (Mpa) |
spring return |
1.0 |
1.4 |
1.3 |
0.8 |
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Hydraulic centration |
- |
1.4 |
1.8 |
0.8 |
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Max. Working pressure (Mpa) |
25 |
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|
Working fluid |
Mineral oil; phosphate-ester |
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Fluid temp. (℃) |
-20~70 |
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Viscosity (mm2/s) |
2.8~380 |
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Working voltage(1) (V) |
DC |
24 |
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|
AC(2) |
127/50Hz 220/50Hz |
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Insulation grade |
IP55 |
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cleanliness |
The maximum allowable cleanliness of the oil should be according to 9th degree of Standard NAS1638. It is suggested that the minimum filter rating should be β10≥75. |
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1) Working voltage is relative to the explosion-proof type, details please refer to “Product introduction”.
2) For voltage AC, rectifier is integrated with the solenoid, no need for external rectifying.