The core element of the Vesta sterile valves series is the PTFE bellows sealing element, the sealing system. One of the major goals achieved by the single-seat valves was to provide proof of cleanability. Modern develop-ment tools were used, so that inferences with respect to cleaning efficiency could be drawn at the early stages of development. Subsequent test runs produced excellent cleaning results, validating the inferences from the design stage. With this achieved, we submitted the valves for EHEDG testing at an independent institute. The corresponding expert report and the EHEDG certificate are available. The Vesta valve programme includes shut-off, tank-bottom and sampling valves in different housing variants as well as valve blocks and distribution systems in the nominal widths DN 10 to DN 100.
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