Guangzhou Qichao Machinery Parts Co., Ltd.
| Applicable Model | E320C Medium Excavator Main Hydraulic Pump |
| OE Part Number | 171-0030 / 1710030 |
| Warranty | 6 Months Under Continuous Excavator Working Condition |
| Supply Ability | 1000PCS/MONTH |
| Payment Terms | T/T |
| Sample Service | Single Sample Available |
| Packaging Details | Neutral Packing/Branded Packaging |
| Brand | ZVEZDA |
| Delivery Time | 1–7 Working Days After Payment |
| Place of Origin | CHINA |
| Model Number | E320C |
| Brand Name | ZVEZDA |
View Detail Information
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Product Specification
| Applicable Model | E320C Medium Excavator Main Hydraulic Pump | OE Part Number | 171-0030 / 1710030 |
| Warranty | 6 Months Under Continuous Excavator Working Condition | Supply Ability | 1000PCS/MONTH |
| Payment Terms | T/T | Sample Service | Single Sample Available |
| Packaging Details | Neutral Packing/Branded Packaging | Brand | ZVEZDA |
| Delivery Time | 1–7 Working Days After Payment | Place of Origin | CHINA |
| Model Number | E320C | Brand Name | ZVEZDA |
| High Light | Hydraulic cartridge relief valve ，Main Pump cartridge relief valve ，171-0030 | ||
Integrated solid anti-rust alloy steel multi-section cartridge body, multi-stage double O-ring anti-leakage sealing structure, fully isolating high-pressure hydraulic oil penetration and metal impurity blockage. The overall surface adopts precision grinding anti-corrosion treatment, adapting to muddy, high-temperature construction site hydraulic environment, eliminating internal leakage and main circuit pressure loss failure. All core components are precision CNC machined domestically, finished with full 350bar ultra-high pressure cycle durability test before delivery.
| Specification | Details |
|---|---|
| Brand | ZVEZDA |
| OE Part Number | 171-0030 / 1710030 |
| Applicable Model | E320C Medium Excavator Main Hydraulic Pump |
| Product Type | Multi-section Full Alloy Steel Hydraulic Main Circuit Overload Relief Cartridge Valve (Main Valve) |
| Rated Relief Pressure | 270–320 Bar Main System Standard Pressure |
| Instant Peak Bearing Pressure | 350 Bar |
| Sealing Material | Double-Layer HNBR High Pressure Oil Resistant O-Ring |
| Cartridge Material | Anti-Corrosion High Strength Alloy Steel Multi-Section Body |
| Origin | China |
| Delivery Time | 1–7 Working Days After Payment |
| Warranty | 6 Months Under Continuous Excavator Working Condition |
| Packaging | Neutral Carton Packing, No Brand Logo |
| Supporting Accessories | Complete Split Cartridge Valve + Spare HNBR Seal O-Rings |
| Sample Service | Single Sample Available With Relief Pressure Stability Test Report |
| 1456892 | 1456893 | 7230987 | 7230988 |
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| 702-22-06500 | 702-22-06501 | 11N6-18720 | 11N6-18721 |
| SA8230-26510 | SA8230-26511 | VOE14639781 | VOE14639782 |
| R900876521 | R900876522 | R900876523 | R900876524 |
| B220401000920 | B220401000921 | B220401000922 | B220401000923 |
| 569-4121 | 569-4122 | 569-4123 | 569-4124 |
| 258-9012 | 258-9013 | 258-9014 | 258-9015 |
| 14578962 | 14578963 | 14578964 | 14578965 |
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| 8974561201 | 8974561202 | 8974561203 | 8974561204 |
| 9247811 | 9247812 | 9247813 | 9247814 |
| KWE5K-30/G26D01 | KWE5K-30/G26D02 | KWE5K-30/G26D03 | KWE5K-30/G26D04 |
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| TOK-72224620 | TOK-72224621 | TOK-72224622 | TOK-72224623 |
| VAL-0810002000 | VAL-0810002001 | VAL-0810002002 | VAL-0810002003 |
| HUS-5924597 | HUS-5924598 | HUS-5924599 | HUS-5924600 |
| TER-2924621 | TER-2924622 | TER-2924623 | TER-2924624 |
| FIAT-7312866 | FIAT-7312867 | FIAT-7312868 | FIAT-7312869 |
| NEW-87429661 | NEW-87429662 | NEW-87429663 | NEW-87429664 |
| CASE-KRV10033 | CASE-KRV10034 | CASE-KRV10035 | CASE-KRV10036 |
| No. | Question & Answer |
|---|---|
| Q1 |
Q: Which medium excavators fit ZVEZDA E320C main relief valve OE 171-0030?
A: Direct replacement for E320C medium excavators, standard split multi-section cartridge size matched OEM 171-0030, directly insert into main valve block without modifying valve cavity. In stock, ship within 1–7 working days.
|
| Q2 |
Q: Excavator still weak digging and engine stall under heavy load after replacement?
A: Fatigued pressure spring leads to drifted relief pressure, replace complete ZVEZDA integrated split main relief cartridge OE 171-0030 to restore standard main circuit pressure and normal digging power.
|
| Q3 |
Q: Can this split main relief valve replace swing relief valve or unloading valve?
A: Not interchangeable. This high pressure hydraulic split cartridge valve is used for main circuit overload protection; swing relief valve handles dedicated swing hydraulic pressure, unloading valve controls idle medium pressure, different medium, pressure range and working principle.
|
| Q4 |
Q: Core advantages of ZVEZDA E320C main relief valve OE 171-0030?
A: High strength alloy steel anti-wear split multi-section spool, high fatigue resistant silicon manganese pressure spring, stable fixed relief pressure, double-layer HNBR high pressure anti-leakage sealing, full anti-rust precision ground cartridge body, OEM standard cartridge dimension 171-0030 direct replacement, neutral unbranded packaging, perfectly match E320C main hydraulic overload protection system.
|
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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