The 4WRAE-2X series is a proportional directional valve with a direct-acting proportional solenoid. It is used to control the flow rate and direction of liquid flow. The product quality is reliable and the performance is stable. Huade® high-quality electromagnetic proportional directional valve series 4WRAE-2X has reliable quality and stable performance. It can replace the same series offered by Rexroth.
| 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 | ||
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 4/2- and 4/3-way proportional directional valves 4WRAE-2X series are designed as direct operated components for subplate mounting. The 4WRA 6 W30-2X proportional directional valve is used to control the flow and direction of hydraulic fluid.
The 4WRAE 10 W1-60-2X 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).
Address
No. 27, Yangsha Road, Huilong Town, Qidong City, Jiangsu Province, China
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