Hydraulic operated safety valve:

The hydraulic driven safety valve mainly includes two parts: the safety valve preparation valve and the hydraulic drive, which is the executive part of the well safety system. High pressure oil enters the upper cavity of the driver to compress the spring at the lower part to open the valve. When the wellhead device is under dangerous pressure, the control mechanism releases the pressure of the hydraulic cylinder by the signal transmitted by the sensor, and the spring pushes the valve rod mechanism to close the valve and wellhead device, so as to ensure the safety of process equipment.