Diaphragm Valves Additively Manufactured Diaphragm Valves for the Pharmaceutical Industry

Source: Press release KSB / SISTO Armaturen S.A

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SISTO Armaturen, a KSB Group company, has supplied additively manufactured (3D-printed) diaphragm valves made of a special alloyed material in series to one of Germany's largest pharmaceutical companies.

3D-printed multiway diaphragm valve bodies for the pharmaceutical industry, prior to surface treatment.
3D-printed multiway diaphragm valve bodies for the pharmaceutical industry, prior to surface treatment.
(Source: KSB SE & Co. KGaA)

These days, modern substance manufacturing facilities are planned and constructed in such a way that they can be used for the most diverse of products. Accordingly, the components installed have to be made of a very high-quality nickel-based alloy, e.g. alloy 2.4605. This also applies to the highly complex multiway diaphragm valve units that can often be found in such plants. Conventionally, valve bodies are machined from solid forged material. In this case, the manufacturer relies on suitable forging bars being available, which may cause long delivery times, particularly for special materials.

Shorter delivery times can be realised with powder bed fusion. But this is only one of the benefits of valves manufactured using this method. It also enables geometries with undercuts, such as integrated cooling channels, which would not or hardly be possible using a milling process. Body parts made by additive manufacturing have further got a higher material homogeneity. Also, components designed for 3D printing are significantly lighter than conventionally manufactured components.

The suitability of additively manufactured materials has been tested and documented by the Luxembourg-based valve manufacturer in cooperation with the German TÜV. Additively manufactured diaphragm valves meet all standards governing their application. For example the requirements of the European Pressure Equipment Directive (PED) 2014/68/EU.

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