Load Relief Valve – Product Overview 

Product Overview

A Load Relief Valve (also called a Load-Holding Valve or Overcenter Valve) is a critical hydraulic component designed to maintain backpressure and safely control loads in hydraulic systems. It prevents uncontrolled movement of suspended or driven loads by providing controlled pressure release, ensuring operational safety in heavy machinery and mobile equipment.

Key Features

✔ Load-Holding Safety – Prevents runaway loads
✔ Controlled Motion – Enables smooth lowering/stopping
✔ Pressure Compensation – Maintains consistent performance
✔ Compact & Robust – Designed for harsh environments
✔ Fail-Safe Operation – Mechanical design (no external power)

Technical Parameters Table

Applications

✔ Mobile Equipment – Cranes, excavators, aerial platforms
✔ Industrial Machinery – Presses, lifts, winches
✔ Marine Systems – Offshore equipment, davits
✔ Energy Sector – Wind turbine pitch control
✔ Safety-Critical Systems – Load suspension, braking

Benefits

• Prevents Load Dropping – Mechanical backup even if hydraulic pressure is lost

• Energy Efficient – Reduces pump load when holding

• Smooth Control – Eliminates jerky movements during load lowering

• Maintenance-Friendly – Field-adjustable settings

• Long Service Life – Hardened surfaces for wear resistance

Selection Guide

Need more details? Ask about:

1. Brand-specific compatibility

2. Troubleshooting common issues

3. Custom pressure/flow configurations

4. Integration with hydraulic circuits