The invention relates to a high-performance valve, in particular to a high-performance valve of a long-distance transport pipeline. The high-performance valve includes a valve main body, a flashboardassembly, an open-close control mechanism, a sliding frame, a rotary adjusting part and a rail seat. According to the high-performance valve, when a gear meshes with an incomplete gear, a sliding holerod can be driven to rotate through a rotary hand rotating disc, thus rising and falling of the flashboard assembly are controlled, and the flow of the valve is slowly and precisely adjusted; and when the gear meshes with a rack, the sliding frame can slide vertically on the rail seat through the rotary hand rotating disc, and the height of the valve is slowly and precisely adjusted. The flashboard assembly is slidably connected to the valve main body, the open-close control mechanism is fixedly connected to the valve main body, the flashboard assembly is slidably connected with the open-close control mechanism, the sliding frame is fixedly connected to the right end of the valve main body, the rotary adjusting part is slidably connected to the upper end of the sliding frame, and the sliding frame and the rail seat are slidably connected.