Balance valve is a kind of valve with special functions. The valve itself has nothing special, but only lies in the difference between the use function and the field. In some industries, because the medium (all kinds of flowable substances) has a large pressure difference or flow difference in each part of the pipe or container, in order to reduce or balance the difference, a valve is installed between the corresponding pipes or containers to adjust the relative balance of pressure on both sides, or to achieve the balance of flow by means of diversion, which is called the balance valve.