Guangzhou Qichao Machinery Parts Co., Ltd.
| Compatible Equipment | PC200-8,PC210-8,PC220-8,PC240-8,PC270-8 |
| Application | Excavator Pilot Hydraulic Oil Circuit Control |
| Payment Terms | T/T |
| Shipment Lead Time | Dispatched within 1–7 working days after payment confirmation |
| Packaging Details | Neutral Packing/Branded Packaging |
| Origin | Guangdong, China |
| Supply Ability | 1000PCS/MONTH |
| OE Part Number | 702-21-57500 |
| Warranty | 6 Months |
| Place of Origin | China |
| Model Number | PC200-8 PC220-8 |
| Brand Name | ZVEZDA |
View Detail Information
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Product Specification
| Compatible Equipment | PC200-8,PC210-8,PC220-8,PC240-8,PC270-8 | Application | Excavator Pilot Hydraulic Oil Circuit Control |
| Payment Terms | T/T | Shipment Lead Time | Dispatched within 1–7 working days after payment confirmation |
| Packaging Details | Neutral Packing/Branded Packaging | Origin | Guangdong, China |
| Supply Ability | 1000PCS/MONTH | OE Part Number | 702-21-57500 |
| Warranty | 6 Months | Place of Origin | China |
| Model Number | PC200-8 PC220-8 | Brand Name | ZVEZDA |
| High Light | clss excavator solenoid valve ，clss hydraulic solenoid valve ，pc200 excavator solenoid valve | ||
It is the core stepless pressure regulating component of CLSS closed load sensing hydraulic pilot system. It converts ECU PWM current signals into stable adjustable pilot hydraulic pressure, precisely controls the opening stroke of main valve spools to realize smooth speed regulation of all working devices under various construction conditions.
| Item Attribute | Technical Parameter |
|---|---|
| Commercial Title | Square Block CLSS Pilot Proportional Pressure Control Solenoid For PC-8 Series Medium Excavator Main Control Valve |
| Cross Reference PN | 7022157500 (Short Code:702-21-57500) |
| Applicable System | Excavator Main Valve Stepless CLSS Closed Load Sensing Pilot Hydraulic Control Circuit |
| Quality Grade | Dust-proof Anti-vibration High Temp Heavy Duty Replacement Standard |
| Production Base | Guangdong, China |
| Product Category | Medium Excavator Main Control Valve Hydraulic Electrical Control Components |
| Electrical Spec | Coil Resistance 14.5Ω, Rated Control Current 708mA |
| Continuous Working Temp | Up to 125℃ without seal aging and pressure signal drift |
| Order Processing Cycle | Normally 1–7 working days once payment received |
| Custom Service | Custom Logo & Custom Export Carton Available For Bulk Orders |
| MOQ Support | 1 Piece Sample Order Acceptable For On-site Machine Compatibility Test |
| Komatsu Parts | JCB Parts | Other Brand Parts |
|---|---|---|
| 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-43-41782 | YQ05.251.047 | 106-0107 |
| 22U-06-22390 | YQ05.251.048 | 106-0108 |
| 22U-06-22400 | YN20S00002F3 | 106-0109 |
| 7821-30-1500 | YN20S00002F4 | 165-9569 |
| 7822-30-1200 | YN20S00002F5 | 206-3305 |
| 7823-30-1400 | LQ50S00001P1 | 134-0649 |
| 7826-30-1100 | LQ50S00001P2 | 144-6670 |
| 7827-30-1000 | 8-98074-566-0 | 152-8973 |
| 7828-30-0900 | 8-98074-567-0 | 171-2540 |
| 7829-30-0800 | 4812369 | 183-4216 |
| 20Y-43-41790 | 256-7891 | 191-6527 |
| 20Y-43-41800 | 300661-00004A | 212-7890 |
| 22U-06-22410 | 21Q6-20820 | 223-1456 |
| 22U-06-22430 | K1013849 | 234-9871 |
| 4705919 | 332/G0912 | 245-3690 |
| 4341545 | 60117466 | 4542152 |
| 4614910 | YQ05.251.049 | 4659775 |
| 4468335 | YN20S00003F1 | 4669841 |
| 4656205 | 7820-30-1700 | 4371651 |
| 4716708 | 4791230 | 4482963 |
| 1751ES-12A6UC4B3S1 | SA-4761-12 | 153-6409 |
| 708-2H-25240 | 256-7891 | 214-5620 |
| 702-21-07010 | 300661-00004A | 222-1399 |
| 702-21-07311 | 21Q6-20820 | 0419-9902 |
| 702-21-07610 | K1013849 | 0419-9903 |
| 702-21-57400 | 332/G0912 | 223-8181 |
| 585-9230 | 60117466 | 224-2092 |
| 627-2304 | YQ05.251.049 | 225-0300 |
| 585-9231 | YN20S00003F1 | 253-3809 |
| 702-21-58100 | 7820-30-1700 | 231-8194 |
| 702-21-57500 | 4791230 | 198-6528 |
| No. | Question | Standard Answer |
|---|---|---|
| Q1 | Which medium excavators adopt CLSS main control pilot solenoid valve 702-21-57500? | This square block CLSS pilot proportional solenoid is specially manufactured for PC200-8 and PC220-8 medium construction excavator main multi-way control valve pilot oil circuit. |
| Q2 | What upgrade does CLSS closed-loop control bring to pilot pressure regulation? | It forms complete signal feedback loop between ECU and main valve, realizes real-time dynamic pilot pressure adjustment, reduces hydraulic power loss and significantly lowers fuel consumption under mixed digging & loading working conditions. |
| Q3 | What abnormal operation phenomena will occur once this pilot solenoid fails? | Slow boom & bucket movement, insensitive operating handle, insufficient breakout force, unstable idle action and continuous abnormal rise of hydraulic oil temperature. |
| Q4 | Is full disassembly of the whole main control valve needed during replacement? | No, this valve is externally mounted on main valve block; only four fixing bolts and wiring plug need to be removed for direct replacement, low maintenance difficulty and short repair time. |
| Q5 | What structural design ensures stable signal output under harsh construction environments? | Thickened braided oil-proof wire plus fully sealed two-pin waterproof connector, integral anti-rust alloy valve block, effectively resist long-term dust, vibration and high temperature interference. |
| Q6 | How to quickly check whether the solenoid coil is damaged before installation? | Use a multimeter to measure coil resistance, the normal range is 13–16 ohms; infinite resistance means open circuit, resistance below 10 ohms indicates coil short circuit. |
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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