... years AJF high pressure safety ball valves, designed on the basis of AQF safety ball valve,have the functions of safety protection,flow cut off ... and fast response,the valve may improve the working efficiency of the system.finally,the valve is characterized by small size ... .5AJF-HX50L-XH140552948581106616011360262217106105232M72×2M60×2M22×1.5 AJF high pressure safety ball valve,special designed