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The relief valve is the core component for controlling pressure in the hydraulic system. It can maintain the stability of the system pressure and prevent equipment damage caused by excessive pressure.
It automatically operates by sensing the system pressure: when the pressure exceeds the set value, the valve core opens, and the excess oil is discharged through the oil return line to reduce the pressure to the set range; when the pressure is normal, it closes to ensure normal oil supply to the system. It has the characteristics of rapid response, precise pressure regulation, and good sealing.
It is mainly divided into direct-acting and pilot-operated types, suitable for different flow and pressure conditions, and is widely used in various hydraulic systems such as hydraulic presses, injection molding machines, and engineering machinery.
