In cases where the reliability of equipment is determined by the absence of dead zones in the pipeline valves, diaphrgm valve are the most effective compared to the other types of valves.

Design of the diaphragm valve can not only prevent the accumulation of product residues in the valve, but also for the complete emptying of the pipes attached to it.

This feature is crucial when choosing shut-off valves, especially in the sterile production of pharmaceuticals, biotechnology, etc.

The basic structural scheme of the diaphragm valve has not changed since its invention by P.K. Zaunders in the 20