How to choose a good quality butterfly valve?

Many friends have all kinds of questions in the process of selecting butterfly valves. Why do the suppliers' quotations vary so much? What is the reason for the price difference? Bundor valve is mainly a supplier of butterfly valves. If your butterfly valve knowledge is not proficient, please refer to the several opinions about selecting butterfly valves collected by Bundor valve.

At present, the butterfly valve is a kind of valve with a wide range of uses. It can be used as a gate valve to cut off the flow of medium and control the flow rate like a globe valve or a ball valve. General butterfly valves are suitable for water conservancy, urban construction and other environments, such as acid and alkaline media such as passing water. These butterfly valves generally have good sealing performance, but they are not suitable for high temperature and high pressure environments. Industrial special butterfly valves can withstand high temperatures and have a relatively wide pressure High, the nominal diameter of the valve is large, and the sealing ring of the valve plate uses a metal ring instead of a rubber ring. Large high temperature butterfly valves are manufactured by welding steel plates, and are mainly used in flue air ducts in high temperature media. In the purchase of butterfly valves, most buyers have a doubt that the quality of the butterfly valves they bought is not good. So how to judge the quality of the butterfly valve?

First of all, we must choose the butterfly valve correctly according to the working conditions, what kind of structure, which driving method, what material is required, etc. This is the first step to ensure the quality of the butterfly valve. Good valves can be damaged if used in incorrect working conditions. After the butterfly valve is selected and closed, how to check the quality? First, observe the sealing surface of the butterfly valve. The smooth surface of the sealing surface without burrs indicates that the butterfly valve is well-processed. Secondly, the sealing performance of the butterfly valve is tested, and the tightness is an important indicator of the quality of the butterfly valve. The perfect tightness indicates that the material, design and processing technology of the butterfly valve and the working conditions are perfectly matched.

In fact, you can't judge a butterfly valve with good or bad, as long as it meets your working environment, it is a good butterfly valve. If the working conditions are special, a valve of very good quality may fail in a short time. In addition, regular butterfly valve maintenance and maintenance can prolong the service life of the butterfly valve.