Diaphragm valve
A diaphragm valve is a stop valve that uses a diaphragm as a closing member to seal the flow path, cut off the fluid, and isolate the valve body cavity from the valve cover cavity. The diaphragm is usually made of elastic, corrosion-resistant, and non-permeable materials such as rubber and plastic. The valve body is mostly made of plastic, fiberglass reinforced plastic, ceramic, or metal-lined rubber materials. It features a simple structure, good sealing and corrosion resistance, and low fluid resistance. It is used for low-pressure, low-temperature, highly corrosive, and suspension-containing media.