This valve is a balancing valve, suitable for various liquid pipeline systems, and is an ideal new energy-saving valve. The valve is equipped with a scaled digital display, which can be intuitively adjusted to any vertical position and can be locked. This valve is mainly used in industrial and civil building heating piping systems. Currently, there is a hydraulic imbalance problem in some pipeline systems. The balancing valve provides a means to solve this problem. It can accurately adjust the pressure drop and flow rate to improve the liquid flow conditions in the pipeline system, achieve pipeline liquid balance and save energy. purpose.