The electric butterfly valve industry has developed very rapidly, and has occupied a place in the entire electric butterfly valve industry and played an irreplaceable role.
In recent years, more and more enterprises have joined the production of electric butterfly valves, making the development of the industry more prosperous. With the increasing competition and the improvement of technology, users can now buy electric butterfly valves at a lower price, and there are many models to choose from. But behind the prosperity, there are also many problems. Some manufacturers, in order to reduce costs, cut corners and take advantage of offline products, produce inferior products, which directly harms the interests of users. Some electric butterfly valve factories do not calculate the load of electric butterfly valves, or even do not have a professional testing equipment. As a senior and responsible electric butterfly valve enterprise, Shanghai Dongfeng specially shares with you how to judge whether an electric butterfly valve conforms to the standard. The shell is the support of the damping element. The perennial load, safety and high strength requirements are essential.
In order to raise the price of the electric butterfly valve, the electric butterfly valve is equipped with a shell that exceeds the normal requirements. For example, a large frame with a small butterfly valve is very funny. Customers may pay several times of the normal price for this, which greatly increases the project cost. First, in order to reduce costs, the shell is very thin. For example, it obviously cannot pass the tensile test without deformation. It can be directly judged as unqualified products. Whether the two ends of the butterfly valve are tightly polished, and if not, the stability of the electric butterfly valve will be affected. The national standard requires that the compression amount of the electric butterfly valve is, which can ensure that the natural vibration frequency of the electric butterfly valve is low enough to ensure the vibration reduction effect. In order to save costs and meet the load requirements, some manufacturers will make the butterfly valve very stiff, and the compression of the butterfly valve on the nominal load is very small. According to this standard, most electric butterfly valves on the market are unqualified. The customer must pay attention to the compression amount of the butterfly valve when purchasing. (1) See the surface treatment of electric butterfly valve and butterfly valve.
Generally, the normal life of electric butterfly valve is 60000~80000 highway, and it can be used for 3~4 years if calculated by 20000 kilometers a year. It is also possible for the car owner to use the car for another year or two after proper maintenance. However, according to the practical application of car owners, most car owners have less than 3 years. According to the calculation of an electric butterfly valve manufacturer, more than 100000 pieces of three guarantee parts returned from the mall every year, accounting for 8.3 ‰ of the annual output. The main reason is that consumers can not maintain and use them correctly. In the true sense, there are not many problems with the quality of electric butterfly valves. In other words, as long as the maintenance and application are in place, the electric butterfly valve can be used for three to five years.