Balance valve is a special function of the valve itself has no special place, only in the use of functions and places are different. In some industries, due to the media (all kinds of flowable substances) in the various parts of the pipeline or container there is a large pressure difference or flow difference, in order to reduce or balance the difference, in the corresponding pipeline or container between the valve to adjust the relative balance of pressure on both sides, or through the shunt method to achieve the balance of flow, the valve is called the balance valve.