Pneumatic high temperature control valve consists of multi-spring pneumatic diaphragm actuator and low flow resistance high temperature control valve body. The body flow channel of pneumatic high temperature globe control valve is S streamline type. It has the advantages of compact structure,light weight,sensitive action,small pressure drop loss,large valve capacity,accurate flow characteristics and convenient maintenance.The pneumatic high-temperature control valve is especially suitable for occasions where the leakage is small, the pressure difference between the valve is small and the temperature is high.