Description
C0170 YA00000703 Control Valve Assembly Overview
The C0170 YA00000703 Control Valve assembly manufactured by Tatan is a 9-spool high-pressure sectional hydraulic distribution unit belonging to our Main Control Valve Assembly classification. Engineered specifically for Hitachi ZX200-5G, ZX200LC-5G, ZX210H-5G, and ZX210K-5G 20-ton excavators, replacing your worn valve with a Tatan complete assembly eliminates cylinder settling, balances dual-pump confluence digging power, and cures internal pressure bypass across demanding quarry and heavy excavation applications.
Powered by the machine’s main hydraulic pump and matched with the Isuzu diesel engine platform, this C0170 YA00000703 Control Valve incorporates precision micro-lapped alloy spools, load-check poppets, arm regeneration galleries, auxiliary breaker circuits, and an integrated straight-travel spool, ensuring 100% direct bolt-on installation with chassis hydraulic hard lines and pilot control hoses.
Key Attributes & Technical Parameters for C0170 YA00000703 Control Valve
| Product Category | Main Control Valve Assembly | Warranty | 1 Year / 12 Months |
| Specific Valve Model | KYB C0170 9-Spool Multi-Section Valve (HIOS III) | Brand Name | Tatan |
| Compatible Equipment | Hitachi ZX200-5G | ZX200LC-5G | ZX210H-5G | OEM Part Number | YA00000703 / 4606144 / 4663196 |
| Matched Engine Series | Isuzu 6BG1T / 4HK1 Diesel Engine Platform | Place of Origin | Guangdong, China |
| Max Operating Pressure | 34.3 MPa (343 bar / 4975 PSI Standard) | Power Boost Pressure | 36.3 MPa (363 bar / 5265 PSI Boost) |
| Pilot Control Pressure | 3.9 MPa (39 bar Standard Pilot Line) | Spool Precision Spec | Micro-Lapped < 0.003 mm Clearance |
| Machinery Test Report | Provided (100% Bench Pressure Tested) | Video Outgoing-Inspection | Provided Before Shipping |
| Hydraulic Fluid Spec | ISO VG 46 Anti-Wear Hydraulic Oil | Packaging | Export Wooden Box Packaging |
Comprehensive Hydraulic Valve & Pump Support
Tatan maintains extensive factory inventory of complete multi-spool control valves, main pumps, regulators, pilot gear pumps, and internal seal kits across global excavator lines:
Supported Excavator Machinery Brands & Global Coverage
In addition to Hitachi crawler excavators, Tatan manufactures and supplies replacement main control valves, hydraulic pumps, and final drives across major equipment brands:
Application Scenarios & Buyer Value
When contractors search to compare Hitachi ZX200-5G control valve replacement cost and upgrade their machine with our C0170 YA00000703 Control Valve, they secure measurable field reliability and lower cost per hour:
| Application Scenario | Value Delivered to Buyer |
|---|---|
| Hitachi ZX200-5G Valve Replacement | 1:1 direct bolt-on installation eliminates cylinder settling and restores simultaneous boom, arm, and swing speeds. |
| Heavy Equipment Repair Workshops | Avoids the labor of disassembling valve slices and resealing tie-rods; installs as a pre-tested complete unit. |
| Quarry & Civil Trenching Fleets | Maintains stable 34.3 MPa working pressure (36.3 MPa boost) during continuous auxiliary breaker hammering and deep digging. |
| Equipment Parts Stockists | High-demand 20-ton valve assembly ready for immediate global air or ocean dispatch to minimize customer machine downtime. |
C0170 YA00000703 Control Valve Diagnostic & Troubleshooting Guide
Use this technical guide to diagnose common hydraulic control valve issues on Hitachi ZX200-5G series excavators:
| Hydraulic Symptom | Technical Cause Analysis | Tatan Factory-Grade Solution |
|---|---|---|
| 1. Boom drops or drifts downward under heavy 1.0 m³ rock bucket | Boom holding check valve poppet seat wear or port relief valve O-ring leakage allowing pressurized fluid to pass to tank. | Replace with Tatan complete C0170 YA00000703 Control Valve assembly with factory pre-seated holding check poppets. |
| 2. Sluggish compound digging (arm & boom slow together) | Arm regeneration spool sticking or internal dual-pump flow-merging check valve contamination failing to combine pump flow. | Disassemble and ultrasonic clean valve galleries; calibrate main relief valve popping pressure to 34.3 MPa (36.3 MPa boost). |
| 3. Machine veers off course when digging while traveling | Straight travel spool sticking or internal travel merge check valve seat wear causing unequal flow distribution to travel motors. | Inspect straight travel pilot pressure, clean spool bore, or replace complete main control valve assembly. |
| 4. External fluid seepage between valve sections | Tie-rod bolt elongation or inter-section fluororubber O-rings degraded from continuous oil temperatures over 85°C. | Install new Tatan sectional valve pre-torqued with industrial O-rings and calibrated tie-rod fasteners. |
Transport Packaging & Certified Quality Assurance
Every Tatan control valve undergoes anti-rust oiling, port capping, plastic sealing, and solid export wooden box packaging before international shipment:
✈️ Express Air Courier
Partnered with DHL, FedEx, and UPS for 3-7 day priority delivery worldwide.
🚢 Sea Cargo Freight
LCL and FCL container ocean freight for bulk equipment parts replenishment.
📦 Export Wooden Crates
Solid fumigated timber cases lined with thick shockproof foam to prevent transit damage.
C0170 YA00000703 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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