The industrial safety valve is one of the most important parts in pressure systems, which has many applications in industries such as oil and gas, refineries, chemical industries, pharmaceuticals, and automobile manufacturing. These valves are installed in pressure systems to prevent sudden explosions. In this article, the operation of the safety valve is investigated. 1- The functional procedure of the safety valve The industrial safety valve is installed on pressure pipes and if the pressure in this line exceeds the permissible limit, the valve opens and reduces the pressure. In order to achieve the correct operation of the industrial safety valve, it is necessary to pay attention to the correct installation methods. The best method for installation is to install it in a suitable place so that in the event of an explosion, no damage will be caused to other components of the system and the surrounding building. 2- The method of selecting and installing safety valves Undoubtedly, having a high quality and standard safety valve is very important for pressure systems. The best way to choose industrial safety valves is to check the requirements of the API 520 standard. 3- Safety valve test Testing of safety valves should be

Table of Contents Industrial safety valve or safety valve Safety valve or Safety valve is a valve that is closed by a spring. And when the pressure behind the valve reaches a static pressure, the mesh has a special function and opens quickly. (This action is called popping the valve) Industrial safety valves are usually used for compressible fluids (gas and steam). The safety valve is called safety valve in English. Relief valve is a mechanical device designed to automatically release excess pressure from a system or equipment and ensure the safety and integrity of the system. Acts as a safeguard against overpressure that could potentially cause damage or failure. Safety valves are commonly used in various industrial applications such as boilers, pressure vessels, pipelines and other systems that contain fluids or gases under pressure. When the pressure exceeds a predetermined limit, the relief valve opens to release the excess pressure and prevent catastrophic failure. The operation of a relief valve usually involves a spring or similar mechanism that responds to changes in pressure. When the pressure exceeds the set limit, the valve opens and releases the excess pressure until the pressure returns to a safe level. Safety valves are