Product Description

1. Basic Info

Part Number: VOE14576336 / 14576336 Product Name: Hydraulic Main Control Valve Assy / Hydraulic Distributor Brand: Applicable Machine: EC200B, EC210B Excavator Condition: Genuine OEM Toshiba UX28-86 Valve Assembly Application: 20 Ton Excavator Hydraulic Control System

2. Core Advantages

• Toshiba UX28-86 original valve assembly, precisely matched for EC200B & EC210B hydraulic system
• Optimized multi-spool design for smooth compound operation, low pressure loss during simultaneous boom, arm, swing and travel actions
• High precision hardened valve spool and cast valve body, strong resistance to abrasion and hydraulic oil contamination
• Integrated overload relief valves and anti-shock circuits, effectively protect hydraulic components under sudden load changes
• Direct bolt-on replacement, matches original mounting holes and pipe ports, no modification required during installation
• Factory hydraulic pressure tested before shipment to guarantee stable performance under continuous construction workload

3. Technical Data

Valve Model: Toshiba UX28-86 Multi-way Main Control Valve Matched Excavator Weight: 20 ton Working Medium: Anti-wear hydraulic oil ISO VG46 Main System Rated Pressure: 32 MPa Overload Relief Pressure: 34.5 MPa Control Type: Pilot hydraulic control Integrated Functions: Boom regeneration, arm regeneration, travel priority, swing priority, overload protection, auxiliary hydraulic port Pilot Control Pressure Range: 2.4–3.3 MPa Valve Body Material: High-strength cast iron Spool Material: Alloy steel with surface hardening treatment Internal Components: Main relief valve, overload valves, shuttle valves, check valves, full set spool assembly Design Durability: OEM standard 10,000 working hours Mounting Form: Bottom flange fixed installation

4. FAQ

Q: Can this UX28-86 valve fit other excavator models? A: It is specially designed for EC200B and EC210B. Not compatible with EC200D, EC210D or other series with different hydraulic layouts.

Q: Are all internal valve spools and relief valves included in this assembly? A: Complete full assembly with all built-in spools, relief valves and check valves as OEM specification.

Q: What is the warranty period? A: 12 months warranty under proper installation and normal operating conditions.