It is very important for a purchaser to select a good electric butterfly valve, because only good can have effect, and only effective can get the expected standard.
In fact, the electric butterfly valve of a butterfly valve is good or bad. In terms of the appearance, the paint, the welding joint, the shell, and the most important thing is the butterfly valve. The butterfly valve is the core damping element of the electric butterfly valve of the butterfly valve, and the material is the most important, but it is not easy for ordinary customers to identify the advantages and disadvantages of the material, which can be learned from the view of the butterfly valve's outer valve pad:
1. Whether the two ends of the butterfly valve are tightly polished, and if not, the stability of the electric butterfly valve will be affected;
2. Whether the butterfly valve is evenly surrounded and the surface is smooth;
3. Many small manufacturers' butterfly valves fail to meet the load requirements, and some large manufacturers also occasionally have this situation, so customers should pay attention when purchasing. Conditional customers should conduct pressure tests on butterfly valves;
4. The national standard requires that the compression amount of the electric butterfly valve is 25mm, so that the natural vibration frequency of the electric butterfly valve is low enough to ensure the vibration reduction effect;
5. 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 the above standard requirements, most electric butterfly valves on the market are unqualified. The customer must pay attention to the compression amount of the butterfly valve when purchasing. In fact, as the core element of the electric butterfly valve of the butterfly valve, the quality of the butterfly valve really has a great impact on the effect of vibration reduction, and the selection of the type is also strict. The asymmetrical electric butterfly valve, even if it is a qualified product, cannot meet the expected standard.