Main Pump Overload Excavator Pressure Relief Valve Cartridge Valve Assembly For DH60-7
Product Details
| Brand: | ZVEZDA | Warranty: | 6 Months Under Continuous Excavator Working Condition |
|---|---|---|---|
| Delivery Time: | 1–7 Working Days After Payment | Applicable Model: | DH55, DH60-7 Mini Excavator Main Hydraulic Pump |
| Origin: | China | Sample Service: | Single Sample Available |
| Highlight |
Overload excavator pressure relief valve,DH60-7 excavator pressure relief valve,Excavator cartridge valve assembly |
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Product Description
Complete multi-item strict inspection before factory shipment: alloy steel spool wear cycle test, relief pressure precise calibration test, HNBR seal high-pressure oil immersion aging test, thread sealing pressure holding test.
| Specification | Details |
|---|---|
| Brand | ZVEZDA |
| Applicable Model | Doosan DH55, DH60-7 Mini Excavator Main Hydraulic Pump |
| Product Type | Full Alloy Steel Hydraulic Main Circuit Overload Relief Cartridge Valve |
| Rated Relief Pressure | 260–320 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 Doosan mini excavators fit ZVEZDA DH55 main relief valve?
A: Direct replacement for Doosan DH55 and DH60-7 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 fuel rail pressure sensor or oil pressure switch?
A: Not interchangeable. This high pressure hydraulic cartridge valve is used for main circuit overload protection; fuel sensor detects diesel pressure, oil pressure switch is mechanical low pressure lubrication alarm part, different medium, pressure range and working principle. |
| Q4 | Q: Core advantages of ZVEZDA DH55 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 DH55/DH60-7 main hydraulic overload protection system. |
Product Highlights
DH55 Main Pump Overload Relief Cartridge Valve Assembly For DH55 DH60-7 Complete multi-item strict inspection before factory shipment: alloy steel spool wear cycle test, relief pressure precise calibration test, HNBR seal high-pressure oil immersion aging test, thread sealing pressure holding test. ...
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