ZHJP/ZHJM series fine small pneumatic film regulating valve is composed of multi-spring withering actuator and bottom flow resistance sleeve, no world cover single seat regulating valve. The volume ratio is 1/3 smaller, the weight ratio is 1/3 smaller, the flow capacity is 1/3, the center of gravity is low, the shock resistance is good, the installation is easy; The performance index is better than similar products, equivalent to foreign CV3000 series regulating valve, widely used in chemical, petroleum, light industry, power station, metallurgy and other industrial production automatic control system.