Our factory has been using Triple offset butterfly valve, because the quality is better, sometimes the feeling is to spend more money to buy better equipment is better, I remember a long time ago read the news, saying that the plant where an accident, then we old factory employees say is likely to be a problem with the valve, when we began to plant start valve repair, but our factory with Triple offset butterfly valve always have not had problems, but of better quality, it is sometimes be sure to buy the feeling of good quality equipment, otherwise accidents may occur.