Reliable, Durable Aseptic Process Pump Makes Key Contribution to Success

The Swiss subsidiary of Dutch firm DSM Nutritional Products AG makes use of the spray drying methodology when producing vitamin and carotenoid powders for the pharmaceutical and food industries. The procedure uses pump technology to convey various emulsions into a spray tower, where they’re dried into powder. But the feed and booster pump that was getting used proved to be an uncertainty factor as a outcome of the diaphragm required for the pumping process tended to tear when the pump was started up. Generally, such manufacturing interruptions may be corrected through instant maintenance and repair work.
However, it is rather expensive to replace a diaphragm or a whole system. DSM was seeking an alternate and finally made a find after they talked to the pump specialists at Lewa Nikkiso Switzerland, who really helpful a Lewa triplex process diaphragm pump for the spray tower utility. The drive unit features a protected start-up mode that keeps the diaphragm positioned within the neutral position, and steady regulation utilizing an integrated monitoring system. Since the hermetically tight pumps are electropolished and CIP-approved, it is simple to satisfy the food industry’s stringent hygienic provisions.

“Pump technology performs a central position in drying oil-in-water emulsions for the meals and pharmaceutical industries. These emulsions comprise substances similar to vitamins, carotenoids, or polyunsaturated fatty acids as active components,” explains Natalie Ibald, plant supervisor of formulations at DSM Nutritional Products AG. “As part of the method chain, each pump is 100 percent built-in into the closed plant system. The pumps are used for conveying the mixtures into the spray tower.”

With the previous system, the chance of unforeseen interruptions to this course of couldn’t be ruled out. As a end result, the different emulsions could not be processed additional. In different words, it was not possible to dry them into powder. The pump diaphragm was the explanation: it was typically too delicate to face up to the stress positioned on it when starting up the pump and would rupture. Replacing the diaphragm lowered the system’s service life and sometimes meant that trouble-free operation could not be guaranteed.

In the course of looking for a reliable alternative, DSM got in touch with the Swiss subsidiary of pump manufacturer Lewa.
“We were already acquainted with Lewa Nikkiso Switzerland as a provider of strong methods with long service lives within the SFP sector. To guarantee trouble-free spray drying, we thought it would be smart to affix forces with the specialists from Lewa and provide you with a design to solve the technical issues,” says Ibald.
DSM is committed to continually bettering its processes and investing in technology. This dedication, together with prior experience with the short service lives of the earlier pumps, led DSM to position special concentrate on reliable operate and a sturdy design in the course of the project planning section. The record of requirements also included a substantial variety of stringent hygienic provisions that needed to be fulfilled.
“Certain meals have provisions concerning microbiological purity that are many times more stringent than these for producing different meals products,” explains Ibald. “This meant that the brand new feed and booster pump had to meet these tougher situations and each type of contamination needed to be ruled out to provide the widest possible variety of products on the system.”


Royal DSM is a global science-oriented company that’s especially lively within the areas of diet, health, and sustainable living. DSM’s mission is to enhance the lives of all. Products and solutions from DSM handle a few of the world’s biggest challenges while simultaneously creating economic, environmental, and societal worth for all its stakeholders—including prospects, workers, shareholders, and society at large.
DSM delivers innovative options for the vitamin, animal diet, private care and aromatics, medical products, environmentally friendly products and functions, in addition to new mobility and interconnectivity.
DSM and its affiliated companies make use of greater than 23,000 people and generate an annual net turnover of roughly 10 billion euros. The firm was founded in 1902 and is listed on the Euronext Amsterdam inventory trade.
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After a visit at the firm premises to contemplate the spatial and technical parameters, Lewa Nikkiso Switzerland beneficial a sort G3F triplex process diaphragm pump for the spray tower utility. This pump includes a fully safe start-up operation, since a spring repeatedly holds the built-in sandwich diaphragm located in a neutral place.
เกจวัดแรงดัน protects the diaphragm towards incorrect positioning and prevents it from being damaged whereas the pump is starting up, growing system availability substantially. And the Lewa triplex is controlled utilizing a stress reduction valve that’s installed within the hydraulic part and could be configured for the specific scenario. Therefore, the pump can be adapted to totally different operational conditions to be able to prevent any overloads that will arise. This ensures that the unit has a long service life and smooth common operation for the complete system.

In addition to the strain reduction valve and the spring management, the design of the diaphragm also plays an necessary role in guaranteeing reliable pump operation. The patented sandwich diaphragm consists of two separate PTFE diaphragms which would possibly be extremely long-lasting. They are related to one another via positive interlocking during the discharge stroke and mechanical force-fitting in the course of the suction stroke.
This makes the pump hermetically tight and successfully prevents exterior contamination. As an additional security function, the DPS monitoring system from Lewa constantly monitors the condition of the diaphragm. The monitoring unit promptly shows any injury to the gadget that leads to increased stress within the diaphragm house.
This makes it attainable to carry out preventive upkeep and restore work before the diaphragm even begins to rupture and doubtlessly contaminates the pumped fluid. Thus, it is usually pointless to modify the pump off immediately, which signifies that neither the pumping course of nor spray drying are negatively impacted to a major extent. If damage to a diaphragm is detected, manufacturing can proceed with none issues up to a deliberate upkeep cease. The components can then be replaced shortly and simply by releasing the cassette for the meeting.

The hermetically tight design of the method diaphragm pump does extra than simply guarantee dependable steady operation. It is also a central element for fulfilling the stringent hygiene provisions that the spray tower utility is topic to. The Lewa triplex maintains a hermetically tight area with out dynamic seals, guaranteeing fully clear and aseptic production conditions. All pump heads that come into contact with the product are also electropolished, which makes it possible to make sure FDA-compliant pump operation.
Because the pump could be cleaned in place (CIP) using completely different alkaline and acidic brokers and with out prior dismantling, it is attainable to satisfy the special necessities for child meals as nicely. The provisions for child food are 1,000 instances more stringent than those for other products within the food sector. Thanks to the hermetically tight design, electropolishing, and CIP cleaning, we had been in a place to rule out any contamination of the pumped medium and clearly meet the required hygiene normal.

The first quote was obtained in June of 2018 and in September of the identical year, DSM Nutritional Products AG placed an order for the triplex process diaphragm pump. In operation since April 2019, the pump has turn out to be an indispensable part of manufacturing at the plant in Sisseln.
“In every phase of the project, Lewa Nikkiso Switzerland demonstrated fast response instances and well-founded expertise, which made a key contribution to implementing the challenge efficiently,” says Ibald. “Our specifications with regard to high quality, robustness, and hygiene had been adopted to the letter in this venture. As a end result, our manufacturing has turn out to be noticeably extra environment friendly and reliable.”


Lewa develops applied sciences and supplies options for the huge array of purposes among its customers. Its products are used primarily within the oil and fuel industry, in gasoline odorization, in refineries and petrochemicals, as properly as in the production of plastics, detergents, and cleaners. Additional application areas embrace the chemical trade, cosmetics industry, pharmaceuticals and biotechnology, food and beverage trade, and energy utilities. For more info, visit

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