Huafilter handles the export of Huade® brand proportional directional valve 4WRA 10 EA60-2X. Huade Hydraulic was established in 1979, through introducing technology from Rexroth and independent research and development, it has now developed into a large state-owned enterprise group. Huade® proportional directional valves are competitive with well-know products with good quality and lower price. As the authorized distributor, we provide high-quality sales services and technical support. Like Huade Hydraulic, we provide customers with high-quality and low-cost hydraulic products.
The 4/2- and 4/3-way proportional directional valves are designed as direct operated components for subplate mounting. They are actuated by means of proportional solenoids with central thread and removable coil. The solenoids are controlled either by external control electronics (type WRA) or by integrated control electronics (type WRAE). The performance of 4WRA 10 EA60-2X can match Rexroth due to two long-terms cooperation.
Product parameter of Proportional Directional Valve 4WRA 10 EA60-2X
Hydraulic
Valve type
HD-WRA
HD-WRAE
Operating pressure (MPa)
Port A,P,B
31.5
31.5
Ports T
21
21
Nominal flow qv nom at △ P=1MPa
NS6 (L/min)
7、15 and 26
NS10(L/min)
30 and 60
Degree of contamination (μ m)
≤20
Hysteresis(%)
≤5
Reversal error (%)
≤1
Response sensitivity(%)
≤0.5
Pressure fluid
Mineral oil or Phosphate ester
Viscosity range
20~380
Ambient temperature range (℃)
-20 to +80
-20 to +50
Weight (kg)
NS6
2
2.2
NS10
6.6
6.8
Electrical
Electrical,solenoid
Valve type
HD-WRA
HD-WRAE
Voltage type
DC
Voltage controlled (V)
±10
Max.current per solenoid(A)
2.5
Solenoid coil resistance (Ω)
Cold value at 20 ℃
2
Max. warm value
3
Duty
100%
Coil temperature (℃)
up to +150
Valve protection to DIN40050
IP65
Electrical, control electronics
control electronics
HD-VT-VSPA2-1-1X/
integrated in the valve
Supply voltage
Nominal voltage VDC
24
Lower limiting value V
21/22
19
Upper limiting value V
35
Power consumption of the amplifier
I max A
1.8
Max. power impulse current A
3
Product Feature And Application of Proportional Directional Valve 4WRA 10 EA60-2X
Features:
▶ For subplate mounting
▶Direct actuated proportional valve for controlling the direction and volume of a flow
▶ Spring centred control spool
▶ Integrated control electronics, interface A1 or F1 for type 4WRAE
▶ Actuation by means of proportional solenoids with central thread and removable coil
▶ Control electronics for type 4WRA
Application:
The 4WRA 10 EA60-2X proportional directional valve is used to control the flow and direction of hydraulic fluid.
Section and symbol of Proportional Directional Valve 4WRA 10 EA60-2X
The 4WRA 10 EA60-2X proportional valves basically consist of: Housing (1) with mounting surface Control spool (2) with compression springs (3 ),Solenoids (4) with central thread,Optional integrated valve electronics (5).
HD-4WRA(E).2X/.
With the solenoids (4) de-energised, the control spool (2) is held in the central position by compression springs (3).
Direct actuation of the control spool (2) by energising a proportional solenoid.E.g. controlling of solenoid "b" (4). The control spool (2) is moved to the left in proportion to the electrical input signal.Connection form P to A and B to T via orifice-like cross sections with progressive flow characteristics. De-energisation of the solenoid (4).The control spool(2) is returned to the central position by compression spring (3).
Structure of Proportional Directional Valve 4WRA -2X
HD-4WRA(E)...A-2X
In principle, the function of this valve version corresponds to that of the valve with 3 spool positions. However, the valves with 2 spool positions are only fitted with solenoid "a". Instead of the 2nd proportional solenoid a plug (5) is fitted for NS 6 or for NS 10 a cover(5).
Note for type 4WRA 6..-2X/...
Draining of the tank line is to be avoided. With the appropriate installation conditions, a back pressure valve is to be installed (back pressure approx.0.2MPa).
For inquiries about hydraulic valves, soleniod directional valves, proportional valves or price list, please leave your email to us and we will be in touch within 24 hours.
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