Pilot Operated Relief Valve

The pilot operated relief valve is a hydraulic component used to regulate pressure. Its working principle is: when the pressure in the pipeline exceeds the set pressure value, the overflow valve will automatically open, allowing the fluid to flow out from the overflow port, thereby reducing the pressure in the pipeline.

A feature of the pilot operated relief valve is that the valve is closed before the pressure reaches the set value, thus avoiding frequent opening or closing of the valve due to small changes in the pressure in the pipeline. At the same time, the pilot relief valve can also control its working pressure range by adjusting the size of the pilot port to meet different hydraulic system requirements.