The DN40 Diaphragm Control Valve, with a 40mm or 1-1/2-inch nominal diameter, is a specialized flow control device designed for precise regulation of various fluids. Its flexible diaphragm separates the process fluid from the valve's actuating mechanism, making it ideal for handling corrosive, viscous, or particulate-laden fluids. By moving up and down, the diaphragm adjusts the valve's opening, enabling accurate control over flow rates and ensuring reliable performance in diverse industrial applications.