XCG2V XG2V Pressure Relief Valve | XCG2V-8-CK-10 | XG2V-6AK-10

LIC Hydraulic offers the XCG2V and XG2V Series, high-performance pilot-operated relief valves designed for precise pressure regulation in sophisticated hydraulic circuits. These valves, available in Size 6 (XG2V-6) and Size 8 (XG2V-8) configurations, are essential for limiting maximum system pressure and protecting hydraulic pumps from overpressure. Models like XCG2V-8-CK-10 and XG2V-6AK-10 are engineered to deliver a flat pressure-flow characteristic, ensuring that the set pressure remains stable even as the bypass flow increases. Whether used in stationary industrial power units or heavy-duty machinery, these valves provide the reliability and responsiveness required for modern fluid power systems.

Technical Specifications (Bulleted List)

• Series: XG2V / XCG2V Pilot Operated Relief Valve

• Nominal Sizes: 6 and 8 (NG6/NG8)

• Max Operating Pressure: Up to $31.5\text{ MPa}$ ($4500\text{ PSI}$)

• Adjustment Options: “W” (Handwheel) or “K” (Internal screw with protective cap)

• Mounting: Subplate mounting, compliant with industry-standard patterns.

• Fluid Compatibility: Mineral oils, water-glycols, and phosphate esters.

Key Technical Advantages

• Precision Pilot Control: The pilot-operated stage allows for a significantly lower pressure override compared to direct-acting valves, providing safer and more predictable system behavior.

• Robust Construction: The valve body is cast from high-strength iron, and internal components are hardened and ground to micron-level tolerances for long-term wear resistance.

• Versatile Pressure Ranges: Multiple spring options (A, B, or C ranges) allow for fine-tuned control over specific pressure bands, optimizing accuracy for your specific application.

• Anti-Vibration Design: The internal damping mechanism prevents valve chatter and resonance, contributing to a quieter and more stable hydraulic environment.

Application Areas

• Hydraulic Power Units (HPUs): Centralized pressure relief for industrial and manufacturing plants.

• Metal Forming: Managing clamp and ejector pressures in hydraulic presses.

• Mobile Equipment: Secondary pressure protection for auxiliary hydraulic functions.

Expert Maintenance Tips

• Seal Integrity: During routine inspections, check the adjustment stem for signs of weeping. Replacing the O-rings periodically prevents external leakage and maintains adjustment accuracy.

• Cleaning the Pilot Orifice: If the valve fails to build pressure, the pilot orifice may be clogged. Disassemble the pilot stage carefully and clean with compressed air and solvent.

• Pressure Setting Security: For “K” type adjustments (XCG2V-8-CK-10), ensure the locknut is tightened after setting the pressure to prevent vibrations from drifting the setting over time.