Description
PC220-7 723-47-20502 Main Control Valve Assembly Overview
The PC220-7 723-47-20502 Main Control Valve assembly manufactured by Tatan is a heavy-duty CLSS monoblock hydraulic distribution unit belonging to our Main Control Valve Assembly classification. Engineered specifically for Komatsu PC220-7 and PC220LC-7 22-ton excavators, replacing your worn control valve with a Tatan complete assembly eliminates cylinder drifting, restores simultaneous multi-function speed, and cures internal pressure bypass across demanding quarry and excavation applications.
Built strictly to original Komatsu OEM specifications, this hydraulic distribution valve incorporates precision micro-lapped spools, boom holding valves, and auxiliary breaker circuits, ensuring 100% direct bolt-on installation with hydraulic pump lines and cylinder pilot hoses.
Key Attributes & Technical Parameters for PC220-7 723-47-20502 Main Control Valve
| Product Category | Main Control Valve Assembly | Warranty | 1 Year / 12 Months |
| Specific Valve Model | Komatsu CLSS 7-Spool Main Valve (PC220-7) | Brand Name | Tatan |
| Compatible Equipment | Komatsu PC220-7 | PC220LC-7 Excavator | OEM Part Number | 723-47-20502 / 723-47-20501 |
| Matched Engine Series | Komatsu SAA6D102E-2 Engine | Place of Origin | Guangdong, China |
| Max Relief Pressure | 34.3 – 37.3 MPa (343 – 373 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 Komatsu, Tatan manufactures replacement main control valves and hydraulic distribution components for major excavator brands:
Application Scenarios & Buyer Value
When upgrading or replacing your 22-ton excavator hydraulic distribution system with our PC220-7 723-47-20502 Main Control Valve, buyers achieve maximum operational uptime and flow control:
| Application Scenario | Value Delivered to Buyer |
|---|---|
| Komatsu PC220-7 Valve Replacement | 1:1 direct bolt-on installation eliminates cylinder settling and restores simultaneous boom, arm, and swing speeds. |
| Hydraulic Overhaul Workshops | Avoids the complex labor of internal bore honing; saves mechanic hours with a pre-adjusted, factory-tested unit. |
| Mining & Quarry Fleet Operations | Heavy-duty alloy spools withstand continuous 37.3 MPa relief pressures during heavy rock-breaker hammer operations. |
| Heavy Equipment Parts Stockists | Fast-moving, high-demand 22-ton control valve inventory ready for immediate shipment to minimize customer downtime. |
PC220-7 723-47-20502 Main Control Valve OEM Diagnostic & Troubleshooting Guide
Use this OEM manual hydraulic diagnostic guide to troubleshoot control valve symptoms on your Komatsu PC220-7 excavator:
| Hydraulic Symptom | Technical Cause Analysis | Tatan Factory-Grade Solution |
|---|---|---|
| 1. Boom drops / drifts downward in neutral position holding | Boom holding valve check poppet seat erosion or internal spool wear allowing high-pressure fluid leakage to return lines. | Replace with Tatan 723-47-20502 complete control valve assembly or inspect boom holding valve cartridge seals. |
| 2. Sluggish compound digging movements (arm & boom slow together) | CLSS pressure-compensation valve spool sticking or LS shuttle valve contamination failing to balance multi-spool flow. | Disassemble and ultrasonic clean valve passages; calibrate main relief pressure to 37.3 MPa boost setting. |
| 3. Hydraulic fluid temperature spikes rapidly under load | Severe internal spool bypass between valve body galleries caused by micro-scoring from contaminated hydraulic oil. | Install Tatan new 723-47-20502 main control valve; flush hydraulic tank lines and install fresh 10μm return filter. |
| 4. Excavator veers off course when digging while traveling | Straight-travel valve spool seized or internal travel junction check valve seat wear causing unequal track flow. | Inspect straight-travel pilot control pressure, clean spool bore, or replace complete main control valve assembly. |
Transport Packaging & Fast Global Shipping
To ensure 100% damage-free international transport, every Tatan PC220-7 723-47-20502 main control valve 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.
PC220-7 723-47-20502 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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