Whilst the latest EHEDG and 3A hygienic design guidelines provided an excellent starting point for our designs, years of working with extremely demanding customers have extended the list of requirements. Many of these have now been incorporated into our own design manuals and this allows us to offer exceptional attention to detail when it comes to hygiene.
Consideration of gasket deformation causing crevice formation, self-draining housings and additional spray nozzle inclusion in critical voids are examples of how these designs go beyond the norm. Special focus has also been placed on mechanical seal selection having found that only one or two seal manufacturers offer products that meet Maelstrom’s full list of criteria.
Of course some of these options do increase the cost of manufacture over standard non-hygienic machines, but many of them are just a result of thought and care in design and manufacture, for which the costs are negligible.
As part of its design review, Maelstrom also examined designs from competitors to assess the general industry “state-of-the-art” and was surprised to find that virtually no batch or inline rotor-stator high shear mixers would meet even the basic EHEDG or 3A guidelines. For customers, this must mean increased levels of inspection, testing, stripdown and manual cleaning – all adding to production costs.
For more information on Distromix FDM hygienic design features and what these can mean for your operations, please contact Maelstrom.