Guangzhou Qichao Machinery Parts Co., Ltd.
| Warranty | 6 Months Under Continuous Excavator Working Condition |
| Delivery Time | 1–7 Working Days After Payment |
| Product Type | Full Alloy Steel Hydraulic Swing Overload Relief Cartridge Valve |
| Supply Ability | 1000PCS/MONTH |
| Payment Terms | T/T |
| Packaging | Neutral Carton Packing |
| Packaging Details | Neutral Packing/Branded Packaging |
| Made In | China |
| Sample Service | Single Sample Available |
| Place of Origin | CHINA |
| Model Number | E307 |
| Brand Name | ZVEZDA |
View Detail Information
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Product Specification
| Warranty | 6 Months Under Continuous Excavator Working Condition | Delivery Time | 1–7 Working Days After Payment |
| Product Type | Full Alloy Steel Hydraulic Swing Overload Relief Cartridge Valve | Supply Ability | 1000PCS/MONTH |
| Payment Terms | T/T | Packaging | Neutral Carton Packing |
| Packaging Details | Neutral Packing/Branded Packaging | Made In | China |
| Sample Service | Single Sample Available | Place of Origin | CHINA |
| Model Number | E307 | Brand Name | ZVEZDA |
| High Light | E307 Excavator Relief Valve ，Swing Buffer Excavator Relief Valve ，Excavator pneumatic cartridge valve | ||
Integrated solid anti-rust alloy steel 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 swing power loss failure. All core components are precision CNC machined domestically, finished with full 300bar ultra-high pressure cycle durability test before delivery.
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| No. | Question & Answer |
|---|---|
| Q1 | Q: Which mini excavators fit ZVEZDA E307 swing relief valve? A: Direct replacement for E307 mini excavators, standard cartridge size, directly insert into swing motor without modifying valve cavity. In stock, ship within 1–7 working days. |
| Q2 | Q: Excavator still has swing impact noise and weak swing torque after replacement? A: Fatigued pressure spring leads to drifted relief pressure, replace complete ZVEZDA integrated swing relief cartridge to restore standard swing buffer pressure and normal swing power. |
| Q3 | Q: Can this swing relief valve replace main circuit relief valve or unloading valve? A: Not interchangeable. This medium-high pressure hydraulic cartridge valve is used for swing overload protection; main relief valve controls whole machine main circuit pressure, unloading valve adjusts idle medium pressure, different medium, pressure range and working principle. |
| Q4 | Q: Core advantages of ZVEZDA E307 swing 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 swing 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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