Guangzhou Qichao Machinery Parts Co., Ltd.
| Compatible Equipment | 320D,323D,325D,329D,330D |
| Application | Excavator Hydraulic System Overpressure Protection & Pressure Limiting |
| MOQ Support | 1 Piece Sample Order Acceptable For On-site Machine Compatibility Test |
| Supply Ability | 1000PCS/MONTH |
| Payment Terms | T/T |
| Order Processing Cycle | Normally 1–7 working days once payment received |
| Packaging Details | Neutral Packing/Branded Packaging |
| OE Part Number | 328-4314 |
| Warranty | 6 Months |
| Place of Origin | China |
| Model Number | 320D |
| Brand Name | ZVEZDA |
View Detail Information
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Product Specification
| Compatible Equipment | 320D,323D,325D,329D,330D | Application | Excavator Hydraulic System Overpressure Protection & Pressure Limiting |
| MOQ Support | 1 Piece Sample Order Acceptable For On-site Machine Compatibility Test | Supply Ability | 1000PCS/MONTH |
| Payment Terms | T/T | Order Processing Cycle | Normally 1–7 working days once payment received |
| Packaging Details | Neutral Packing/Branded Packaging | OE Part Number | 328-4314 |
| Warranty | 6 Months | Place of Origin | China |
| Model Number | 320D | Brand Name | ZVEZDA |
| High Light | 3284314 hydraulic ，hydraulic excavator solenoid valve ，cartridge 3284314 | ||
| Specification | Detailed Information |
|---|---|
| Full Product Name | 320D Excavator Main Distribution Valve Cartridge Hydraulic Safety Relief Valve |
| OEM OE Number | 328-4314 / 3284314 |
| Compatible Machine | 320D Medium Construction Excavator |
| Brand | ZVEZDA |
| Condition | 100% Brand New Aftermarket OEM Equivalent Spare Parts |
| Origin | Guangdong, China |
| Core Material | Carburized Alloy Valve Spool + High Elastic Alloy Pressure Spring |
| Structure Type | Pure Mechanical Screw-in Cartridge Relief Valve (No Electromagnetic Coil) |
| Installation Position | Excavator Main Hydraulic Distribution Manifold Block |
| Shipment Lead Time | Dispatched within 1–7 working days after payment confirmation |
| Outer Packaging | Neutral Export Carton + Shockproof PE Inner Foam |
| 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 |
| 702-21-60900 | —— | —— |
| 1751ES-12A6UC4B3S1 | SA-4761-12 | —— |
| 708-2H-25240 | —— | —— |
| 714-11-16840 | —— | —— |
| 714-23-15520 | —— | —— |
| 203-60-56180 | —— | —— |
| 153-6409 | —— | —— |
| 714-11-16830 | —— | —— |
| 214-5427 | —— | —— |
| 222-1399 | —— | —— |
| 0419-9902 | —— | —— |
| 223-8181 | —— | —— |
| 224-2092 | —— | —— |
| 225-0300 | —— | —— |
| 253-3809 | —— | —— |
| 225-4558 | —— | —— |
| 231-8194 | —— | —— |
| 264-3114 | —— | —— |
| 198-6528 | —— | —— |
| 206-60-51130 | —— | —— |
| 241-7668 | —— | —— |
| 328-4314 | —— | —— |
| No. | Question | Standard Answer |
|---|---|---|
| Q1 | Which excavator model fits cartridge relief valve 328-4314? | This mechanical screw-in safety relief valve is exclusively designed for 320D medium excavator main distribution valve block. |
| Q2 | What interchangeable short OE number corresponds to 328-4314? | The cross reference short code is 3284314, two part numbers represent the same mechanical relief valve assembly. |
| Q3 | Does this relief valve rely on electromagnetic coil to control pressure? | No, it is fully mechanical pressure limiting structure without coil, relies on spring and spool to realize automatic overflow pressure relief. |
| Q4 | What core safety function does this cartridge relief valve provide? | It limits the maximum pressure of the hydraulic main circuit, releases excess pressure to protect hydraulic pumps, pipelines and cylinder components from overload damage. |
| Q5 | What typical hydraulic faults will occur if the original relief valve fails? | Insufficient digging power, sharply rising hydraulic oil temperature, frequent oil leakage at pipe joints and easy tube burst under heavy load. |
| Q6 | What wear-resistant treatment improves the service life of valve spool? | The valve spool adopts overall carburizing hardening treatment to resist abrasion of tiny metal impurities in hydraulic oil. |
| Q7 | Is full disassembly of distribution valve required during replacement? | No, independent screw-in cartridge design, single piece can be replaced quickly without splitting the whole manifold. |
| Q8 | Is single piece sample supported for field equipment pressure test before bulk purchase? | Yes, single-piece sample order is supported to verify fitting and pressure stabilization performance on 320D excavator. |
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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