Guangzhou Qichao Machinery Parts Co., Ltd.
| Packaging | Neutral Carton Packing |
| Delivery Time | 1–7 Working Days After Payment |
| Sample Service | Single Sample Available |
| Supply Ability | 1000PCS/MONTH |
| Sealing Material | Double-Layer HNBR High Pressure Oil Resistant O-Ring |
| Payment Terms | T/T |
| Applicable Model | E200B Medium Excavator Main Hydraulic Pump |
| Packaging Details | Neutral Packing/Branded Packaging |
| Brand | ZVEZDA |
| Made In | China |
| Warranty | 6 Months Under Continuous Excavator Working Condition |
| Place of Origin | CHINA |
| Model Number | E200B |
| Brand Name | ZVEZDA |
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Product Specification
| Packaging | Neutral Carton Packing | Delivery Time | 1–7 Working Days After Payment |
| Sample Service | Single Sample Available | Supply Ability | 1000PCS/MONTH |
| Sealing Material | Double-Layer HNBR High Pressure Oil Resistant O-Ring | Payment Terms | T/T |
| Applicable Model | E200B Medium Excavator Main Hydraulic Pump | Packaging Details | Neutral Packing/Branded Packaging |
| Brand | ZVEZDA | Made In | China |
| Warranty | 6 Months Under Continuous Excavator Working Condition | Place of Origin | CHINA |
| Model Number | E200B | Brand Name | ZVEZDA |
| High Light | E200B Excavator Relief Valve ，CAT Excavator Relief Valve ，Overload hydraulic relief valve cartridge | ||
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 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 |
| Applicable Model | E200B Medium Excavator Main Hydraulic Pump |
| Product Type | 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 |
| 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 |
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| No. | Question & Answer |
|---|---|
| Q1 |
Q: Which medium excavators fit ZVEZDA E200B main relief valve?
A: Direct replacement for E200B medium 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 high pressure hydraulic cartridge valve is used for main circuit overload protection; swing relief valve controls dedicated swing hydraulic pressure, unloading valve adjusts idle medium pressure, different medium, pressure range and working principle. |
| Q4 |
Q: Core advantages of ZVEZDA E200B 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 E200B 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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