This study discusses the application of hydraulic reducer in fast open Angle valve,introduces the working principle,key components and functions of hydraulic reducer,the structure and operation characteristics of fast open Angle valve,and analyzes the integrated design and performance optimization strategy of the two.Through a series of performance tests,the superior performance of the integrated system in response speed,pressure tolerance,flow control,durability,temperature adaptability,and vibration resistance is verified.The results show that the combination of hydraulic reducer and fast open angle valve improves the efficiency and reliability of fluid control and is suitable for chemical,petroleum,natural gas,water treatment and pharmaceutical industries.