Regulating valve with high turn-off differential pressure balance structure

The utility model relates to a high turn-off differential pressure balance structure regulating valve, which comprises a three-way valve device and a balance cavity device, the balance cavity device is arranged in the three-way valve device, the balance cavity device comprises a rubber ring 5, pistons 6, a step seal 7, a slotted nut 8, a nut 9 and a pressure guide pipe 15, the pressure guide pipe 15 is arranged in a valve body 2 and in the middle of a sleeve 10, the pistons 6 are arranged at two ends of the sleeve 10, and the step seal 7 is arranged in the rubber ring 5. The rubber ring 5 is arranged on the piston 6 and connected to the valve body 2, the step seal 7 is arranged on the piston 6 and connected to the sleeve 10, the slotted nut 8 is connected with the sleeve 10 and the valve body 2, and the nut 9 is connected with the slotted nut 8 and the valve body 2. The device is high in stability, can counteract medium pressure, meets working conditions, and can stabilize the working state of the regulating