High Quality Hydraulic Overflow Relief Valve For Xcmg Excavators Loaders Construction Machinery Part *******64/*******3-9150

The *******64 / *******3-9150 Hydraulic Overflow Valve is a premium-quality, precision-calibrated safety component designed to regulate hydraulic system pressure in heavy-duty construction equipment. Installed in the main hydraulic circuit, this overflow relief valve protects sensitive components such as pumps, actuators, hoses, and control valves from damage caused by over-pressurization—ensuring both operational safety and system longevity.

Engineered to meet demanding industrial standards, this valve delivers exceptional performance in high-flow hydraulic environments, making it an ideal solution for excavators, wheel loaders, and material handling machinery working in harsh terrain.

Performance Advantages:

• Pressure Stability: Maintains consistent system pressure by discharging excess flow once it exceeds the calibrated threshold.

• Durable Build: Made of heat-treated alloy steel with precision-machined internals for high wear resistance and fatigue durability.

• Responsive Flow Control: Quick-reacting internal spool minimizes hydraulic shock and prevents cavitation.

• Long Service Life: Sealing surfaces are honed and surface-treated to withstand thousands of pressure cycles without leakage or drift.

Technical Features:

• Operating pressure range: up to 31.5 MPa (315 bar)

• Threaded standard BSP/NPT interface for direct installation

• Compact body size for limited-space hydraulic manifolds

• Maintenance-free design with factory-set cracking pressure

Cross-Compatible Equipment:Although primarily designed for XCMG excavators and wheel loaders, the valve’s standard pressure setting and port sizing allow it to be retrofitted to:

• Komatsu PC200-7 / WA380

• Hyundai R220LC

• Liugong 922E, 856H

• SDLG LG956F

• SEM 660D hydraulic circuits

• Custom hydraulic systems in mobile and fixed construction equipment

Typical Applications:

• Hydraulic pump relief systems

• Pilot pressure line protection

• Boom, arm, and bucket cylinder circuits

• Travel and swing motor loop regulation