Doosan DH500 Excavator Relief Valve Main Pump Overload Cartridge
Price:
Please send mail or Whatsapp
MOQ:
1 Piece
Delivery Time:
Negotiable
Brand:
ZVEZDA
Product Description
DH500 Main Pump Overload Relief Cartridge Valve Assembly For DH500
Adopts high wear-resistant alloy steel spool and high fatigue-resistant silicon manganese pressure spring, stable calibrated relief pressure without drift under long-term 340bar high-pressure hydraulic oil and frequent heavy load impact. Effectively eliminate aging defects of original valves: relief failure, insufficient digging force, internal spool sticking, oil leakage at thread sealing surface. Stable mass production, sufficient stock for fast delivery.
| Specification | Details |
|---|---|
| Brand | ZVEZDA |
| Applicable Model | Doosan DH500 Large Excavator Main Hydraulic Pump |
| Product Type | Multi-section Split Full Alloy Steel Hydraulic Main Circuit Overload Relief Cartridge Valve (Main Valve) |
| Rated Relief Pressure | 300–340 Bar Main System Standard Pressure |
| Instant Peak Bearing Pressure | 370 Bar |
| Sealing Material | Double-Layer HNBR High Pressure Oil Resistant O-Ring |
| Cartridge Material | Anti-Corrosion High Strength Alloy Steel Split 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 |
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| No. | Question & Answer |
|---|---|
| Q1 | Q: Which Doosan large excavators fit ZVEZDA DH500 main relief valve? A: Direct replacement for Doosan DH500 large excavators, standard split multi-section 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 split main relief cartridge 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 DH500 main relief valve? 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 split cartridge body, OEM standard cartridge dimension direct replacement, neutral unbranded packaging, perfectly match DH500 main hydraulic overload protection system. |
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Company
Guangzhou Qichao Machinery Parts Co., Ltd.
Location
825-827, Zhuji International Machinery City, No.36 Zhuji Road, Tianhe District, Guangzhou, China
Contact Person
Sales