Circle Seal safety valve

circle sealsafety valveIt is a special branch of the valve family, and its uniqueness lies in the fact that safety valves, unlike other valves, only serve as switches, but more importantly, they protect the safety of equipment. 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 equipment during the process. As of 2013, there were over 700 manufacturers and traders of various types of safety valves, with more than 200 daily trading inquiries, indicating a significant increase in the supply and demand market for safety valves. Based on preliminary analysis of the first quarter data, 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 pressure equipment. A safety valve (also known as a relief valve) is an automatic valve that opens and closes based on 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 will automatically open 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 and liquefied rockscirclesealsafety valveHigh pressure bypass, pressure pipeline, pressure vessel, etc. for oil and gas tanker trucks or liquefied petroleum gas railway tankers, oil production wells, steam power generation equipment. Safety valves are generally divided into spring type safety valves, lever type safety valves, and pulse type safety valves according to their structural forms, among which spring type safety valves are the most commonly used; According to the connection method, it can be divided into threaded safety valves and flange safety valves. The diameter of safety valves is generally not large, commonly ranging from DN15mm to DN80mm. Valves larger than 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 our country that have the qualifications to produce safety valves, because safety valves belong to the special equipment industry. The State Administration of Quality Supervision, Inspection and Quarantine is relatively strict in applying for qualification review, and the huge demand market for safety valves undoubtedly brings more wealth opportunities to these qualified enterprises that produce safety valves.circlesealsafety valveThere are two main types of structures: spring type and lever type. Spring type refers to the sealing between the valve disc and the valve seat relying on the force of the spring. The lever type relies on the force of the lever and heavy hammer. With the demand for large capacity, there is another type of pulse type safety valve, also known as pilot operated safety valve, which consists of a main safety valve and an auxiliary valve. When the pressure of the medium in the pipeline exceeds the specified pressure value, the auxiliary valve opens first, and the medium enters the main safety valve along the pipeline, and the main safety valve is opened to reduce the increased medium pressure.The discharge capacity of a safety valve is determined by the diameter of the valve seat and the opening height of the valve disc, and can also be divided into two types: the micro opening opening height is the inner diameter of the valve seat（1/20) to (1/40), the fully open type is (1/3) to (1/4).In addition, depending on the usage requirements, there are enclosed and non enclosed types. Closed type means that the discharged medium does not leak out and is completely discharged along the designated outlet. It is generally used for toxic and corrosive media. Non enclosed type is generally used for non-toxic or non corrosive media.

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