The high-pressure angle seat valve can save space by maintaining flow rate. It is a directional angle seat valve operated by a single acting pneumatic actuator with spring safety protection. When in use, it should be selected as normally open or normally closed. Angle seat valves are widely used for short-term frequent starting, with the characteristics of sensitive response and accurate action. When used in conjunction with solenoid valves, pneumatic control can accurately control gas and liquid flow rates. It can meet the requirements of accurate temperature control and liquid dripping.