Specifically suited to handle corrosive and general applications, it permits the larger options of linings and diaphragm grades to be combined. Given the shorter valve stroke, it is the preferred option to fluoropolymers lining and the only design suiting to PTFE diaphragms.

Diaval Weir Diaphragm Valves allow for more diaphragm cycles with less running and downtime costs, its pocketless design avoids line fluid contamination. Weir valves are the option when flow control is required.