Description
KMX32NA Main Control Valve Assembly 2401-9291 Overview
The KMX32NA Main Control Valve Assembly 2401-9291 manufactured by Tatan is a precision monoblock hydraulic distribution valve belonging to our Main Control Valve Assembly classification. Engineered specifically for Doosan Daewoo DH420-7, DH420LC-7, and DX420LCA 42-to-45 ton heavy mining excavators and loaders, replacing your worn control valve with a Tatan complete assembly eliminates hydraulic lag, attachment drifting, and internal pressure bypass instantly.
Built strictly according to original OEM specifications, this hydraulic distribution valve incorporates precision micro-lapped spools and main relief valves, ensuring 100% direct bolt-on installation with hydraulic pump lines and cylinder pilot hoses.
Key Attributes & Parameters for KMX32NA Main Control Valve Assembly 2401-9291
| Product Category | Main Control Valve Assembly | Warranty | 1 Year / 12 Months |
| Specific Valve Model | KMX32NA / KFX Control Valve | Brand Name | Tatan |
| Compatible Equipment | Doosan DH420-7 | DX420LCA Excavator | OEM Part Number | 2401-9291 / KMX32NA |
| Matched Engine Series | Doosan DE12TIS / DV11 Engine | Place of Origin | Guangdong, China |
| Max Relief Pressure | 34.3 – 36.3 MPa (343 – 363 bar) | Pilot Control Pressure | 3.9 MPa (39 bar) |
| Spool Precision Spec | Micro-Lapped < 0.003 mm Clearance | Quality Status | 100% Brand New Monoblock Assembly |
| Machinery Test Report | Provided (100% Bench Tested) | Video Outgoing-Inspection | Provided Before Shipping |
| Hydraulic Fluid Spec | ISO VG 46 / VG 68 Anti-Wear Oil | Packaging | Export Wooden Box Packaging |
Supported Machinery Brands & Main Valve Parts Coverage
In addition to Doosan, Tatan manufactures replacement main control valves and hydraulic distribution components for major excavator brands:
Application Scenarios & Buyer Value
When upgrading or replacing your excavator hydraulic distribution system with our KMX32NA Main Control Valve Assembly 2401-9291, buyers achieve maximum operational uptime and precise flow distribution:
| Application Scenario | Value Delivered to Buyer |
|---|---|
| Doosan DH420-7 Main Valve Replacement | 1:1 direct bolt-on replacement eliminates hydraulic cylinder drift and restores smooth compound movements. |
| Hydraulic Repair Workshops | Replaces complex internal spool honing; reduces labor hours and eliminates pressure bypass warranties. |
| Parts Dealers & Stockists | High-demand 42-ton mining excavator control valve ready for fast local sale to construction contractors. |
| Rental Fleet Maintenance | Extends excavator working hours and ensures smooth multifunction digging operations. |
KMX32NA Main Control Valve Assembly 2401-9291 OEM Diagnostic Guide
Use this OEM manual hydraulic diagnostic guide to troubleshoot control valve symptoms on your Doosan DH420-7 excavator:
| Hydraulic Symptom | Technical Cause Analysis | Tatan Factory-Grade Solution |
|---|---|---|
| 1. Boom / Arm cylinder drifting downward during neutral position holding | Internal spool wear or overload relief valve poppet seat erosion causing high-pressure oil leakage to tank. | Replace with Tatan 2401-9291 complete main control valve assembly or inspect main relief poppet seals. |
| 2. Slow hydraulic cylinder response & weak digging force | Main safety relief valve setting pressure drop (<34.3 MPa) or pilot spool sticking due to contaminated oil. | Flush hydraulic oil lines, calibrate main relief valve pressure to 34.3 MPa, or install a new control valve assembly. |
| 3. Extreme hydraulic oil overheating under compound digging operations | Internal oil bypass between spool galleries caused by housing bore scoring or damaged center section O-rings. | Install Tatan new KMX32NA main control valve assembly; flush hydraulic system and install 10μm oil return filter. |
| 4. Hydraulic oil leaking from pilot cap cover | Pilot pressure cap O-ring degradation or pilot spool return spring fatigue. | Replace pilot end cap seals or swap to Tatan factory pre-tested complete main control valve assembly. |
Transport Packaging & Fast Global Shipping
To ensure 100% damage-free international transport, every Tatan KMX32NA Main Control Valve Assembly 2401-9291 undergoes anti-rust oiling, waterproof plastic sealing, and solid export wooden box packaging.
✈️ Express Air Courier
Partnered with DHL, FedEx, UPS, and TNT for express door-to-door delivery worldwide.
🚢 Sea Cargo Freight
LCL and FCL ocean container shipping for heavy hydraulic main control valves and bulk orders.
📦 Export Wooden Cases
Fumigated solid wooden boxes with thick shockproof foam lining for maximum safety.
Quality Control & International Certificates
Tatan hydraulic main control valves are manufactured under ISO 9001 quality management systems and strictly comply with CE safety standards.
KMX32NA Main Control Valve Assembly 2401-9291 FAQ & Related Categories
🔗 Explore Related Doosan & Heavy Equipment Spare Parts:
- KMX32NA 2401-9291 Main Control Valve Assembly for Doosan DH420-7 Excavator Loader
- K3V180DT 2401-9288 Hydraulic Main Pump for Doosan DH420-7 Excavator Loader
- MAG-180VP 2401-9239 Travel Motor Final Drive for Doosan DH420-7 Excavator
- View All Doosan Heavy Equipment Excavator & Loader Spare Parts Collection
* Note: Wholesale Reference Price Starts From $300.00. Please contact Gavin for a final customized quote.
Reviews
There are no reviews yet.