The diaphragm valve, also known as «Diaphragm Valve», is a type of valve with a linear motion mechanism used for stopping, starting, and regulating the flow of fluids. In its common form, this valve uses a flexible diaphragm (a soft, elastic disc) as the element to block the flow, and a raised surface at the bottom of the valve serves as the seat for the diaphragm. Diaphragm valves are widely used in piping systems for sanitary installations, power plants, petrochemical factories, construction projects, mining operations, and pharmaceutical manufacturing.