This is a Pneumatic Diaphragm Stainless Steel Control Valve with Manual Function, a flow control valve integrating pneumatic automatic control and manual emergency operation. It mainly consists of a pneumatic diaphragm actuator (with handwheel), valve positioner, filter regulator, and stainless steel valve body:It receives control signals (e.g., 4-20mA) via the positioner, adjusts the actuator air pressure to drive the valve core to lift, realizing precise automatic regulation of fluid flow; when the pneumatic system fails, the top handwheel can be used to manually control the valve core opening, ensuring continuous pipeline operation.
Made of stainless steel, it is corrosion-resistant and suitable for various fluids (water, steam, weakly corrosive media). It is widely used in automatic process systems of petrochemical, food and pharmaceutical industries, combining the efficiency of automatic control with the reliability of emergency working conditions.
