The Crane Saunders Diaphragm Valves are glandless valve that consist of a valve body, a flexible elastomeric diaphragm, and a seat (Weir/Saddle) upon which the diaphragm closes the valve. Diaphragm Valve is designed for leak-proof control of abrasive and corrosive liquids, suspensions, slurries, and pulps. Diaphragm valves (or membrane valves) consist of a valve body with two or more ports, an elastomeric diaphragm, and a weir or saddle or seat upon which the diaphragm closes the valve. Crane Saunders Diaphragm Valves is a new type of valve and a special type of shut-off valve widely used in various fields.