21-1490 Proportional Solenoid Valve Assembly OE 1211490 KWE5K-31/G24YA30 Fit E320B E320D
Product Details
| OE Part Number: | 121-1490 | Application: | Excavator Main Pump Hydraulic Control |
|---|---|---|---|
| Compatible Equipment: | E312B,E320B,E320C,E320D,E325B,E330B | Warranty: | 6 Months |
| MOQ Support: | 1 Piece Sample Acceptable For On-site Machine Compatibility Test | ||
| Highlight |
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Product Description
It is the core flow regulation proportional control component of excavator hydraulic system. It receives ECU PWM proportional signal to generate stable linear electromagnetic force, adjusts spool opening to control hydraulic oil flow, realizes smooth swing and travel speed adjustment during construction excavation and site shifting work, effectively avoid sudden hydraulic jitter.
| Specification | Detailed Information |
|---|---|
| Brand | ZVEZDA |
| Full Product Name | E320B E320C E320D Excavator 24V Hydraulic Proportional Solenoid Valve 121-1490 (1211490 / KWE5K-31/G24YA30) |
| OEM Part Number | 121-1490 / 1211490 / KWE5K-31/G24YA30 |
| Compatible Machine | E320B, E320C, E320D Medium Hydraulic Excavator |
| Matched Component | Excavator Main Multi-way Control Valve |
| Rated Voltage | DC24V |
| Condition | 100% Brand New Aftermarket OEM Equivalent Complete Assembly |
| Origin | Guangdong, China |
| Core Material | Full Ion Nitride Hardened Multi-groove Alloy Spool + Low Loss Pure Copper Electromagnetic Coil |
| Wiring Connector | Yellow Mark 2-Pin Fully Sealed Waterproof Plug |
| Installation Position | Excavator Multi-way Valve Flange Mounted Proportional Control Valve |
| Shipment Lead Time | Dispatched within 1–7 working days after payment confirmation |
| Outer Packaging | Neutral Export Carton + Shockproof EPE Foam Inner Liner |
| Series 1 PN | Series 2 PN | Universal Spare Part Numbers |
|---|---|---|
| 20Y-43-41780 | 331/30884 | 4520781 |
| 22U-06-22420 | 331/30885 | 4581230 |
| 22U-06-22380 | 331/30886 | 4601592 |
| 782-5301-301 | 701/80284 | 4632710 |
| 782-5301-302 | 701/80285 | 4678921 |
| 7824-30-1600 | 11S-49 | 4756890 |
| 7825-30-1301 | 60117463 | 4721563 |
| 7825-30-1302 | 60117463LM | 4739125 |
| 7861-92-4130 | 60117464 | 4772106 |
| 7861-92-4131 | 60117465 | 4789321 |
| 20Y-43-41781 | YQ05.251.046 | 4801234 |
| 20Y-43-41800 | 300661-00004A | 212-7890 |
| 708-2H-25240 | 21Q6-20820 | 214-5620 |
| 702-21-07010 | K1013849 | 0419-9902 |
| 702-21-07311 | 332/G0912 | 0419-9903 |
| 702-21-07610 | 60117466 | 223-8181 |
| 702-21-57400 | YQ05.251.049 | 224-2092 |
| 585-9230 | YN20S00003F1 | 225-0300 |
| 627-2304 | 7820-30-1700 | 253-3809 |
| 585-9231 | 4791230 | 231-8194 |
| 702-21-58100 | 403-0363 | 198-6528 |
| 702-21-57500 | 485-5747 | 328-4314 |
| 702-21-60700 | 375-4414-02 | 384-3892 |
| 714-07-16730 | 485-9850-03 | 485-5747 |
| 201-0950 | 485-9850-03 | 491-0908 |
| 25/220804 | 491-0908 | 553-5204 |
| 25/220994 | 25/220804 | 25/220994 |
| 31Q6-20131 | 25/220994 | 31Q6-91220 |
| 31Q6-91220 | 31Q6-20131 | 086-1879 |
| 086-1879 | 31Q6-91220 | 31765-FC000 |
| 31765-FC000 | 086-1879 | 053400-0745 |
| 053400-0745 | 31765-FC000 | 419-15-47221 |
| 419-15-47221 | 053400-0745 | KDRDE5K-20/40C04 |
| KDRDE5K-20/40C04 | 419-15-47221 | 31Q6-91720 |
| 31Q6-91720 | KDRDE5K-20/40C04 | 25/220804 |
| 25/220804 | 31Q6-91720 | 25/974628 |
| 25/974628 | 25/220804 | 4I-5674 |
| 4I-5674 | 25/974628 | 096-5945 |
| 096-5945 | 4I-5674 | 111-9916 |
| 111-9916 | 096-5945 | 111-9100 |
| 111-9100 | 111-9916 | 56D-15-35220 |
| 56D-15-35220 | 111-9100 | DRE2K-X5-937-16 |
| DRE2K-X5-937-16 | 56D-15-35220 | 116-3526 |
| 116-3526 | DRE2K-X5-937-16 | 121-1490 |
| No. | Question | Standard Answer |
|---|---|---|
| Q1 | Which excavators match 24V proportional solenoid valve 121-1490 KWE5K-31/G24YA30? | This flange-mounted proportional control valve fits E320B, E320C, E320D medium excavators equipped with standard multi-way hydraulic valve block. |
| Q2 | What hydraulic functions does this solenoid control? | It adjusts the flow of auxiliary hydraulic oil, steplessly controls swing rotation speed and travel running speed to realize smooth composite operation. |
| Q3 | What abnormal hydraulic faults will occur when this solenoid fails? | Slow swing and travel movement, unstable hydraulic pressure, obvious jitter during compound action, and continuously rising hydraulic oil temperature. |
| Q4 | Is full disassembly of the multi-way valve required during replacement? | No, external flange fixed design; only remove four fixing bolts and disconnect the wire plug, no need to split the internal main valve body. |
| Q5 | What wear-resistant and high-temperature resistant process prolong service life? | The whole spool undergoes ion nitriding hardening treatment, matched double HNBR high temperature oil-resistant sealing rings and fully sealed two-pin waterproof plug to resist long-term oil mist and vibration. |
| Q6 | Are 121-1490 and 1211490 interchangeable part numbers? | Yes, the two codes are cross reference spare part numbers, corresponding to the same complete proportional solenoid assembly and can be replaced mutually. |
| Q7 | How to quickly detect coil damage before installation? | Use a multimeter to measure coil resistance, normal range 14–14.8 ohms; infinite resistance means open circuit, resistance below 10 ohms indicates internal short circuit and cannot be installed. |
Product Highlights
21-1490 Proportional Solenoid Valve Assembly OE 1211490 KWE5K-31/G24YA30 Fit E320B E320D It is the core flow regulation proportional control component of excavator hydraulic system. It receives ECU PWM proportional signal to generate stable linear electromagnetic force, adjusts spool opening to ...
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