ZZV series self-operated micro-pressure regulating valve is an actuator product that does not need any external energy and uses the self-energy of the regulated medium to achieve automatic adjustment. The product adopts a balanced single seat valve quick opening flow characteristics adjustment mechanism, the internal use of non-filled, non-friction type movable components, stable medium pressure, high adjustment accuracy, for micro-pressure control, safe and reliable sealing performance, can be arbitrary during operation Adjust the settings and other features. Therefore, it is suitable for occasions such as the fuel gas of various industrial furnace combustion systems, the protection of the protective gas of the oil storage tanks and oil tanks, and the automatic adjustment of the heat treatment protective gas.