The utility model discloses a high-precision dynamic flow balance valve, which relates to the technical field of balance valves and comprises an electric
actuator, a balance valve component is arranged below the electric
actuator, and two flow
pressure monitoring meters are arranged on the front surface and the rear surface of the top of the balance valve component. The front portion and the rear portion of the balance valve
assembly are in threaded connection with two external assemblies. According to the high-precision dynamic flow balance valve, the threaded plastic inner layer fixedly connected to the outer surface of the mounting opening achieves the effect that a connecting
water pipe is not rusted after being used for a long time, and later mounting and dismounting are affected, meanwhile, a mounting groove ring formed in the inner wall of an externally-connected threaded block is used for assisting mounting of a
damper and a second spring, and the service life of the
damper and the second spring is prolonged. The external threaded block is connected with an external
water pipe through the threaded plastic inner layer, applies pressure to the
rubber ring and transmits the pressure to the first springs and the hard
rubber ring, and the
damper and the second spring are used for achieving the effects of extruding and buffering the pressure and improving the sealing effect.