Guangzhou Qichao Machinery Parts Co., Ltd.
| Application | Excavator Swing Motor Hydraulic Control |
| MOQ Support | 1 Piece Sample Acceptable For On-site Machine Compatibility Test |
| Supply Ability | 1000PCS/MONTH |
| Payment Terms | T/T |
| Packaging Details | Neutral Packing/Branded Packaging |
| Compatible Equipment | E312B,E320B,E320C,E320D,E325B,E330B |
| OE Part Number | 121-1491 |
| Warranty | 6 Months |
| Model Number | E320B E320D |
| Place of Origin | China |
| Brand Name | ZVEZDA |
View Detail Information
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Product Specification
| Application | Excavator Swing Motor Hydraulic Control | MOQ Support | 1 Piece Sample Acceptable For On-site Machine Compatibility Test |
| Supply Ability | 1000PCS/MONTH | Payment Terms | T/T |
| Packaging Details | Neutral Packing/Branded Packaging | Compatible Equipment | E312B,E320B,E320C,E320D,E325B,E330B |
| OE Part Number | 121-1491 | Warranty | 6 Months |
| Model Number | E320B E320D | Place of Origin | China |
| Brand Name | ZVEZDA | ||
| High Light | proportional 1211491 ，proportional excavator solenoid valve ，24v 1211491 | ||
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, adjust the opening of internal valve spool to control hydraulic oil flow, realize stepless smooth adjustment of swing and travel speed during excavation and site transfer, effectively avoid sudden hydraulic jitter and unsmooth compound action.
| Specification | Detailed Information |
|---|---|
| Brand | ZVEZDA |
| Full Product Name | E320B E320C E320D E325B Excavator 24V Hydraulic Proportional Solenoid Valve 121-1491 (1211491 / KWE5K-31/G24DB30) |
| OEM Part Number | 121-1491 / 1211491 / KWE5K-31/G24DB30 |
| Compatible Machine | E320B, E320C, E320D, E325B Medium Hydraulic Excavator |
| Matched Component | Main Multi-way Control Valve Proportional Control Circuit |
| 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 |
| 121-1490 | 116-3526 | 121-1491 |
| No. | Question | Standard Answer |
|---|---|---|
| Q1 | Which excavators match 24V proportional solenoid valve 121-1491 KWE5K-31/G24DB30? | This flange-mounted proportional control valve fits E320B, E320C, E320D, E325B medium excavators equipped with standard multi-way hydraulic valve block. |
| Q2 | What hydraulic functions does this solenoid valve control? | It adjusts auxiliary hydraulic oil flow proportionally, steplessly controls swing rotation speed and travel running speed to realize smooth composite operation of working devices. |
| 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 continuous abnormal high 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 121-1491 and 1211491 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. |
Company Details
Business Type:
Manufacturer
Total Annual:
5000000-10000000
Employee Number:
50~100
Ecer Certification：
Verified Supplier
Guangzhou Qichao Machinery Co., Ltd. Premier Factory Specializing in R&D & Production of Excavator Electrical Spare Parts Based in Zhuji International Machinery City,Tianhe District,Guanazhou. Our full product lineup covers solenoid valves, sensors, throttle motors, controllers flameout swi... Guangzhou Qichao Machinery Co., Ltd. Premier Factory Specializing in R&D & Production of Excavator Electrical Spare Parts Based in Zhuji International Machinery City,Tianhe District,Guanazhou. Our full product lineup covers solenoid valves, sensors, throttle motors, controllers flameout swi...
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