The DIAVAL range of Diaphragm Valves is encountered in many market sectors and process media applications. The process engineer should observe the Diaphragm valve selection criteria and match it to the actual plant duties.

When deciding to use Diaphragm Valves in a process plant, the following parameters should be observed: *Fluid Temperature* Fluid properties and Concentration * Line pressure ; if checked parameters allow for the use of Diaphragm Valves, then a second check list should be considered to select the most appropriate Diaphragm Valve: * Clean or dirty media, pressure drop and intended valve purpose to define the Valve style (Weir, ST or Full Flow) * Corrosion or abrasion duties will lead to the proper choice of materials, linings and diaphragms * Finally process end connections will define the body end style*.

Some typical Industry Application Sheets are available in this section that are intended as a Customer Support Data Base.All Diaval users and customers are invited to exchange their plant experiences with us with the aim to enrich the global knowledge of valve application in the process industry.