Description
Tatan KMX15R 4327129 4296348 Main Control Valve Assembly Overview
The Tatan KMX15R 4327129 4296348 Main Control Valve Assembly is a high-precision multi-spool hydraulic directional block belonging to our Main Control Valve Assembly classification. Engineered specifically for Hitachi EX200-3, EX200LC-3, and EX200H-3 20-ton excavators, installing this complete KMX15R 4327129 Main Control Valve Assembly unit eliminates hydraulic cylinder drifting, sluggish boom hoist response, and compound movement interference.
Constructed from high-tensile alloy cast iron, this assembly houses precision-ground spools with tight 0.007 mm clearances to minimize oil bypass. Pre-installed with pilot-operated pressure relief valves and load-holding checks, it ensures exact flow matching between your dual hydraulic main pumps and work equipment cylinders.
Key Attributes & Parameters for KMX15R 4327129 Main Control Valve Assembly
| Product Category | Main Control Valve Assembly | Warranty | 1 Year / 12 Months |
| Specific Valve Model | KMX15R Multi-Spool Directional Valve | Brand Name | Tatan |
| Compatible Equipment | Hitachi EX200-3 | EX200LC-3 Excavator | OEM Part Number | 4327129 / 4296348 / 4330205 |
| Main Relief Pressure | 32.4 MPa (324 Bar / 4700 PSI) | Port Overload Relief | 34.3 MPa (343 Bar / 4975 PSI) |
| Spool Bore Tolerance | 0.006 – 0.009 mm Precision Ground | Integrated Circuits | Boom Holding & Arm Regeneration |
| Machinery Test Report | Provided (100% Bench Pressure Tested) | Video Outgoing-Inspection | Provided Before Shipping |
| Body Material | High-Tensile Alloy Cast Iron Block | Place of Origin | Guangdong, China |
| Quality Status | 100% Brand New Control Valve Unit | Packaging | Export Wooden Box Packaging |
Supported Machinery Brands & Hydraulic Valve Coverage
In addition to Hitachi, Tatan manufactures replacement complete main control valves, hydraulic manifolds, and valve cartridges for leading machinery brands:
Application Scenarios & Buyer Value
When resolving hydraulic control and distribution failures with our KMX15R 4327129 Main Control Valve Assembly, workshops and equipment owners gain immediate benefits:
| Application Scenario | Value Delivered to Buyer |
|---|---|
| Hitachi EX200-3 Valve Bank Replacement | Full drop-in assembly eliminates repetitive machine downtime caused by internal spool leakage and micro-cracks in aging blocks. |
| Hydraulic Component Rebuild Centers | Eliminates high-cost spool oversize reaming and hand-lapping on cast iron bores that have suffered severe scoring. |
| Heavy Earthmoving Fleet Owners | Restores balanced flow division during compound operations, enabling simultaneous boom lift and arm crowding without stall. |
| International Machinery Stockists | Pre-tested, export-ready inventory suitable for servicing classic Dash-3 excavators in infrastructure projects worldwide. |
KMX15R 4327129 Main Control Valve OEM Diagnostic Guide
Use this technical diagnostic guide to identify hydraulic valve faults on your Hitachi EX200-3 excavator:
| Hydraulic Circuit Symptom | Technical Cause Analysis | Tatan Factory-Grade Solution |
|---|---|---|
| 1. Boom drops or arm retracts automatically under load | Damaged boom holding valve poppet seat or excessive clearance (>0.015 mm) between the main spool and cast bore, bleeding circuit oil back to tank. | Replace with a factory-tested complete KMX15R 4327129 Main Control Valve Assembly. |
| 2. Specific work tool action is slow while pump pressure is normal | Port overload relief valve cartridge spring fatigue or contaminated seat holding the circuit below rated relief pressure (<25 MPa). | Clean or replace individual overload relief cartridges or swap the complete pre-calibrated valve assembly. |
| 3. Joystick operates heavily or actuator spool sticks | Contamination scoring on spool lands, distorted valve block caused by uneven mounting torque, or clogged pilot end cap passages. | Flush hydraulic reservoir, replace return line filters, and install a brand new Tatan valve unit with torqued mounting bolts. |
| 4. Excavator bogs down during compound travel and digging | Travel straight spool failure or sticking arm regeneration check valve preventing balanced dual-pump flow distribution. | Inspect pilot control line pressure (3.9 MPa) and replace with a calibrated complete valve bank unit. |
Transport Packaging & Fast Global Shipping
To ensure 100% damage-free international transport, every Tatan main control valve assembly is flushed with preservation fluid, capped with steel threaded plugs, sealed in moisture-proof barrier film, and bolted inside an export-grade wooden crate.
✈️ Express Air Courier
Partnered with DHL, FedEx, UPS, and TNT for 3-7 day express door-to-door delivery worldwide.
🚢 Sea Cargo Freight
LCL and FCL ocean container shipping for heavy hydraulic assemblies and bulk stock orders.
📦 Export Wooden Cases
Fumigated solid wooden boxes with custom high-density foam inserts to prevent shipping shock.
Quality Control & International Certificates
Tatan hydraulic components are manufactured under ISO 9001 certified quality control systems and strictly comply with international industrial pressure vessel safety standards.
KMX15R 4327129 Main Control Valve FAQ & Related Categories
* Note: Wholesale Reference Price Starts From $300.00. Please contact Gavin for a final customized quote.
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