Guangzhou Qichao Machinery Parts Co., Ltd.
| Sample Service | Single Sample Available |
| Warranty | 6 Months Under Continuous Excavator Working Condition |
| Supply Ability | 1000PCS/MONTH |
| Payment Terms | T/T |
| Packaging | Neutral Carton Packing |
| Packaging Details | Neutral Packing/Branded Packaging |
| Matching Model | E307 Main Circuit Main Relief Valve |
| Brand | ZVEZDA |
| Delivery Time | 1–7 Working Days After Payment |
| Place of Origin | CHINA |
| Model Number | E307 |
| Brand Name | ZVEZDA |
View Detail Information
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Product Specification
| Sample Service | Single Sample Available | Warranty | 6 Months Under Continuous Excavator Working Condition |
| Supply Ability | 1000PCS/MONTH | Payment Terms | T/T |
| Packaging | Neutral Carton Packing | Packaging Details | Neutral Packing/Branded Packaging |
| Matching Model | E307 Main Circuit Main Relief Valve | Brand | ZVEZDA |
| Delivery Time | 1–7 Working Days After Payment | Place of Origin | CHINA |
| Model Number | E307 | Brand Name | ZVEZDA |
| High Light | hitachi excavator control valve cartridge ，wear resistant hitachi excavator control valve ，wear resistant pressure relief cartridge valve | ||
Adopts high wear-resistant alloy steel spool and high fatigue-resistant silicon manganese pressure spring, stable calibrated relief pressure without drift under long-term 260bar high-pressure hydraulic oil and frequent heavy load impact. Effectively eliminate aging defects of original valves: relief failure, insufficient digging force.
| Specification | Details |
|---|---|
| Brand | ZVEZDA |
| Applicable Model | E307 Mini Excavator Main Hydraulic Pump |
| Product Type | Full Alloy Steel Hydraulic Main Circuit Overload Relief Cartridge Valve (Main Valve) |
| Rated Relief Pressure | 240–260 Bar Main System Standard Pressure |
| Instant Peak Bearing Pressure | 300 Bar |
| Sealing Material | Double-Layer HNBR High Pressure Oil Resistant O-Ring |
| Cartridge Material | Anti-Corrosion High Strength Alloy Steel |
| 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 Cartridge Valve + Spare HNBR Seal O-Rings |
| Sample Service | Single Sample Available With Relief Pressure Stability Test Report |
| 2125-1226 | 21251226 | 4-02-901 | 402901 |
| XKBF-00743 | 21G013A | K1025678 | K1025679 |
| 1456892 | 1456893 | 7230987 | 7230988 |
| RV265-05501 | RV265-05502 | SV926501 | SV926502 |
| 2479631 | 2479632 | 31Q6-28910 | 31Q6-28911 |
| 049120-5260 | 049120-5261 | ND102360-1290 | ND102360-1291 |
| 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 |
| 723-45-61200 | 723-45-61201 | 723-45-61202 | 723-45-61203 |
| 31N8-19210 | 31N8-19211 | 31N8-19212 | 31N8-19213 |
| XJBN-00290 | XJBN-00291 | XJBN-00292 | XJBN-00293 |
| 8974561201 | 8974561202 | 8974561203 | 8974561204 |
| 9247811 | 9247812 | 9247813 | 9247814 |
| KWE5K-30/G26D01 | KWE5K-30/G26D02 | KWE5K-30/G26D03 | KWE5K-30/G26D04 |
| A810201070110 | A810201070111 | A810201070112 | A810201070113 |
| 709-71-11302 | 709-71-11303 | 709-71-11304 | 709-71-11305 |
| 34E-08-22610 | 34E-08-22611 | 34E-08-22612 | 34E-08-22613 |
| 552-6330 | 552-6331 | 552-6332 | 552-6333 |
| SA7270-41260 | SA7270-41261 | SA7270-41262 | SA7270-41263 |
| 14538971 | 14538972 | 14538973 | 14538974 |
| 4659123 | 4659124 | 4659125 | 4659126 |
| R900961234 | R900961235 | R900961236 | R900961237 |
| B220401000880 | B220401000881 | B220401000882 | B220401000883 |
| 7012910 | 7012911 | 7012912 | 7012913 |
| PC055-RV26501 | PC055-RV26502 | PC055-RV26503 | PC055-RV26504 |
| EC055-SV0921 | EC055-SV0922 | EC055-SV0923 | EC055-SV0924 |
| DH055-YF7130 | DH055-YF7131 | DH055-YF7132 | DH055-YF7133 |
| KOM-708-2L-06760 | KOM-708-2L-06761 | KOM-708-2L-06762 | KOM-708-2L-06763 |
| HYU-31N9-18230 | HYU-31N9-18231 | HYU-31N9-18232 | HYU-31N9-18233 |
| DOO-420-00366 | DOO-420-00367 | DOO-420-00368 | DOO-420-00369 |
| CAT-312-5770 | CAT-312-5771 | CAT-312-5772 | CAT-312-5773 |
| SAU-13063111 | SAU-13063112 | SAU-13063113 | SAU-13063114 |
| XCM-803010575 | XCM-803010576 | XCM-803010577 | XCM-803010578 |
| JCB-25/221011 | JCB-25/221012 | JCB-25/221013 | JCB-25/221014 |
| KOB-PSV2-70T | KOB-PSV2-71T | KOB-PSV2-72T | KOB-PSV2-73T |
| SUM-KBJ11400 | SUM-KBJ11401 | SUM-KBJ11402 | SUM-KBJ11403 |
| YAN-129945-49200 | YAN-129945-49201 | YAN-129945-49202 | YAN-129945-49203 |
| MTU-0055267801 | MTU-0055267802 | MTU-0055267803 | MTU-0055267804 |
| PER-1837893C91 | PER-1837893C92 | PER-1837893C93 | PER-1837893C94 |
| NAB-KXJ12568 | NAB-KXJ12569 | NAB-KXJ12570 | NAB-KXJ12571 |
| 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 mini excavators fit ZVEZDA E307 main relief valve? A: Direct replacement for E307 mini excavators, standard cartridge size, 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 main relief cartridge to restore standard main circuit pressure and normal digging power. |
| Q3 |
Q: Can this main relief valve replace swing relief valve or unloading valve? A: Not interchangeable. This medium-high pressure hydraulic cartridge valve is used for main circuit overload protection; swing relief valve controls swing dedicated hydraulic pressure, unloading valve adjusts idle medium pressure, different medium, pressure range and working principle. |
| Q4 |
Q: Core advantages of ZVEZDA E307 main relief valve? A: High strength alloy steel anti-wear 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 direct replacement, neutral unbranded packaging, perfectly match E307 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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