DH80 Small Excavator Relief Valve Main Circuit Overload Protection Steel Cartridge Parts
Product Details
| Brand: | ZVEZDA | Warranty: | 6 Months Under Continuous Excavator Working Condition |
|---|---|---|---|
| Made In: | China | Sample Service: | Single Sample Available |
| Packaging: | Neutral Carton Packing | ||
| Highlight |
Circuit Overload Excavator Relief Valve,Steel Excavator Relief Valve,Excavator cartridge valve parts |
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Product Description
Small Excavator Main Circuit Overload Protection Relief Valve DH80 All Steel Cartridge Spare Part
It adopts high wear-resistant alloy steel spool and high fatigue-resistant silicon manganese pressure spring. Under long-term 320bar high-pressure hydraulic oil and frequent heavy load impact working conditions, calibrated relief pressure remains stable without drift. Effectively eliminate aging defects of original valves: relief failure, insufficient digging power, internal spool sticking, oil leakage at thread sealing surface. Stable mass production, sufficient stock for fast delivery.
Product Specifications
| Specification | Details |
|---|---|
| Brand | ZVEZDA |
| Applicable Model | Doosan DH80 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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Questions & Answers
Q1: Which Doosan mini excavators fit ZVEZDA DH80 main relief valve?
A: Direct replacement for Doosan DH80 mini excavators, standard cartridge size, directly insert into main valve block without modifying valve cavity. In stock, ship within 1–7 working days.
Q2: 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: 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: Core advantages of ZVEZDA DH80 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 DH80 main hydraulic overload protection system.
Product Highlights
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