NEWS
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Development and application of safety valves
abstract：A safety valve is a special branch of the valve family, which is unique because it only serves as a switch compared to other valves, and more importantly, it protects equipment safety.
A safety valve is a special branch of the valve family, which is unique because it only serves as a switch compared to other valves, and more importantly, it protects equipment safety. With the rapid development of China's economic construction, there are more and more equipment projects with pressure control. Given the need for equipment pressure relief, safety valves play a crucial role in protecting the equipment. As of 2013, there were over 700 manufacturers and traders of various types of safety valves, with over 200 daily transaction inquiries. The supply and demand market for safety valves has significantly increased. Based on preliminary analysis of data from previous quarters, the demand for safety valves is expected to be 20 percentage points higher. Safety valves are important safety accessories on boilers, pressure vessels, and other pressurized equipment. A safety valve (also known as a relief valve) automatically opens and closes according to the working pressure (working temperature) of the pressure system. It is generally installed on equipment or pipelines in closed systems to protect system safety. When the pressure or temperature inside the equipment or pipeline exceeds the set pressure of the safety valve, it automatically opens for pressure relief or cooling, ensuring that the pressure (temperature) of the medium inside the equipment and pipeline is below the set pressure (temperature), protecting the normal operation of the equipment and pipeline, preventing accidents, and reducing losses. Safety valves are mainly widely used in steam boilers, liquefied petroleum gas tank cars or liquefied petroleum gas railway tank cars, oil production wells, high-pressure bypass of steam power generation equipment, pressure pipelines, pressure vessels, etc. Safety valves are generally divided into spring type safety valves, lever type safety valves, and pulse type safety valves according to their structural forms, with spring type safety valves being more commonly used; According to the connection method, it is divided into threaded safety valves and flange safety valves. The diameter of safety valves is generally not large, with commonly used ones ranging from DN15mm to DN80mm, and those exceeding 150mm are generally referred to as large diameter safety valves. It is an undeniable fact that the market size of the safety valve industry expanded in 2013. There are not many enterprises in China that are qualified to produce safety valves, as safety valves belong to the special equipment industry. The State Administration for Quality Supervision and Administration of China is relatively strict in applying for qualification review. The huge demand market for safety valves undoubtedly brings more wealth opportunities to these qualified enterprises that produce safety valves.