Electric piston type air regulating valve is a kind of valve that can control the unsteady flow of air in the pipeline, also known as the air steady flow valve, driven by the electric actuator turboworm drive valve crankshaft drive piston reciprocating action to realize the flow regulation. Suitable for air, can also be used for water pipe use. Widely used in sewage treatment plants, water plants, diversion projects and other media for air, water pipe network system, to adjust the pipeline medium flow, flow and adjust the pressure of the pipe network.