Proportional valves of type 4WRTE are pilot-operated directional control valves with electrical position feedback, integrated electronics (OBE) and optional spool position monitoring. High precision, fast response and stable control of proportional valve WRTE-4X make it a key component in many industrial systems.
| General | ||||||
| Sizes (NG) | 10 | 16 | 25 | 27 | 32 | 35 |
| Weight (kg) | 8.7 | 11.2 | 16.8 | 17 | 31.5 | 34 |
| Installation position and commissioning information | Preferably horizontal | |||||
| Ambient temperature range (°C) | -20..+50 | |||||
| Maximum storage time (Years) | 1 *(if the storage conditions are observed; refer to the operating instructions 07600-B) | |||||
| MTTF values according to EN ISO 13849 Years | 150 (for more information see data sheet 08012) | |||||
| Sine test according to DIN EN 60068-2-6 | 10.. 2000 Hz /maximum of 10 g/10 cycles /3 axes | |||||
| Noise test according to DIN EN 60068-2-64 | 20... 2000 Hz/10 gS /30 g peak/30 min. /3 axes | |||||
| Transport shock according to DIN EN 60068-2-27 | 15 g / 11 ms /3 shocks /3 oxes | |||||
| Damp heat, cyclic, according to DIN EN 60068-2-30 | Variant 2 +25°C ... +55C, 90% ... 97% relative humidity,2cycles of 24 hours | |||||
Features:
▶Design to enhance reliability and security
1.Automatic pressure compensation in the control chambers of the main stage by the pilot control valve
2.Control spool of the main stage in the spring centered central position and/or in the offset position
3.Optionally with spool position monitoring
▶Flexible - suitable for position, speed and pressure control
▶Precise - high response sensitivity and little hysteresis
Application:
proportional directional valve WRTE-4X can be widely used in petrochemical, automobile manufacturing, intelligent equipment, power generation, metallurgical industry and other industries.
The WRTE-4X valve basically consists of 3 main assemblies:
1.Housing (1) with main stage control spool (2) and optional spool position monitoring (13)
2.Integrated electronics(optionally with electronics protection membrane (14)) with inductive position transducer (3) of the main stage
3.Pilot control valve (4) with control spool/socket unit (5), inductive position transducer (6) and pressure feed back for central position of the main stage control spool (2).
With de-energized proportional solenoids (7; 8) central position of the main stage control spool (2) due to centering spring (9) and pressure feed back.Control of the main stage control spool (2) via the pilot control valve (4)→ the main stage control spool (2) is positioned in a regulated manner.Controlling the control spool of the pilot control valve(4) by changing the solenoid force of the proportional solenoids (7;8).Connection of the command and actual values in the integrated electronics.Pilot oil supply to the pilot control valve internally via port P or externally via port X Pilot oil return internally via port T or externally via Y to the tank.With a command value of O V, the electronics control the main stage control spool (2) in central position.
Symbol of Proportional Directional Valve WRTE-4X
Address
No. 27, Yangsha Road, Huilong Town, Qidong City, Jiangsu Province, China
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