The pneumatic sanitary diaphragm valve is a sterile diaphragm valve whose control principle is a pneumatic actuator that is connected to the pressure of the air source, and uses the pressure of the air source to activate the pneumatic actuator to achieve the opening and closing action of the valve. Its opening and closing member is a diaphragm made of soft material. The close fitting of the valve body and the diaphragm provides the valve body seal and the valve seat tightness, and separates the valve body cavity from the bonnet cavity and the driving component. Pneumatic Hygienic Diaphragm Valves are ideal for food level pipe fluid control and on/off…