Reliable, Durable Aseptic Process Pump Makes Key Contribution to Success

The Swiss subsidiary of Dutch firm DSM Nutritional Products AG uses the spray drying technique when producing vitamin and carotenoid powders for the pharmaceutical and meals industries. The process uses pump technology to convey varied emulsions into a sprig tower, the place they are dried into powder. But the feed and booster pump that was getting used proved to be an uncertainty issue as a end result of the diaphragm required for the pumping course of tended to tear when the pump was began up. Generally, such production interruptions can be corrected through quick maintenance and repair work.
However, it is rather costly to switch a diaphragm or a complete system. DSM was looking for another and finally made a find after they talked to the pump specialists at Lewa Nikkiso Switzerland, who beneficial a Lewa triplex process diaphragm pump for the spray tower software. The drive unit features a safe start-up mode that keeps the diaphragm located in the impartial place, and steady regulation utilizing an built-in monitoring system. Since the hermetically tight pumps are electropolished and CIP-approved, it’s simple to satisfy the meals industry’s stringent hygienic provisions.

“Pump know-how performs a central role in drying oil-in-water emulsions for the meals and pharmaceutical industries. These emulsions contain substances such as vitamins, carotenoids, or polyunsaturated fatty acids as active ingredients,” explains Natalie Ibald, plant supervisor of formulations at DSM Nutritional Products AG. “As a part of the process 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 earlier system, the danger of unforeseen interruptions to this course of couldn’t be dominated out. As a end result, the different emulsions couldn’t be processed further. In other phrases, it was not attainable to dry them into powder. The pump diaphragm was the explanation: it was often too sensitive to face up to the stress placed on it when beginning up the pump and would rupture. Replacing the diaphragm decreased the system’s service life and sometimes meant that trouble-free operation could not be assured.

In the course of looking for a reliable various, DSM received in contact with the Swiss subsidiary of pump manufacturer Lewa.
“We had been already familiar with Lewa Nikkiso Switzerland as a provider of sturdy systems with long service lives in the SFP sector. To guarantee trouble-free spray drying, we thought it would be sensible to join forces with the specialists from Lewa and provide you with a design to unravel the technical issues,” says Ibald.
DSM is dedicated to continually improving its processes and investing in technology. This commitment, together with prior expertise with the short service lives of the earlier pumps, led DSM to put special focus on reliable operate and a strong design during the project planning part. The record of necessities additionally included a substantial variety of stringent hygienic provisions that needed to be fulfilled.
“Certain foods have provisions relating to microbiological purity which would possibly be many times extra stringent than those for producing other meals merchandise,” explains Ibald. “This meant that the new feed and booster pump needed to meet these more difficult conditions and every sort of contamination needed to be dominated out to supply the widest potential variety of merchandise on the system.”


Royal DSM is a world science-oriented firm that’s particularly active in the areas of diet, well being, and sustainable residing. DSM’s mission is to enhance the lives of all. Products and options from DSM tackle some of the world’s biggest challenges while concurrently creating financial, environmental, and societal worth for all its stakeholders—including prospects, employees, shareholders, and society at giant.
DSM delivers innovative options for the vitamin, animal vitamin, personal care and aromatics, medical products, environmentally friendly products and functions, in addition to new mobility and interconnectivity.
DSM and its affiliated firms make use of more than 23,000 folks and generate an annual internet turnover of approximately 10 billion euros. The firm was founded in 1902 and is listed on the Euronext Amsterdam inventory exchange.
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After a go to on the company premises to think about the spatial and technical parameters, Lewa Nikkiso Switzerland recommended a sort G3F triplex course of diaphragm pump for the spray tower software. This pump includes a utterly secure start-up operation, since a spring constantly holds the built-in sandwich diaphragm located in a impartial place.
This protects the diaphragm in opposition to incorrect positioning and prevents it from being broken while the pump is beginning up, increasing system availability substantially. And the Lewa triplex is managed utilizing a stress relief valve that’s installed within the hydraulic half and can be configured for the particular situation. Therefore, the pump may be adapted to totally different operational conditions so as to forestall any overloads that may arise. pressure gauge 10 bar ensures that the unit has an extended service life and smooth common operation for the complete system.

In addition to the stress aid valve and the spring control, the design of the diaphragm also performs an necessary position in making certain reliable pump operation. diaphragm seal patented sandwich diaphragm consists of two separate PTFE diaphragms which are extraordinarily long-lasting. They are linked to each other by way of optimistic interlocking in the course of 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 a further safety characteristic, the DPS monitoring system from Lewa repeatedly monitors the condition of the diaphragm. The monitoring unit promptly shows any damage to the gadget that results in increased strain in the diaphragm space.
This makes it possible to carry out preventive maintenance and repair work before the diaphragm even begins to rupture and potentially contaminates the pumped fluid. Thus, it is normally unnecessary to modify the pump off right away, which means that neither the pumping process nor spray drying are negatively impacted to a major extent. If harm to a diaphragm is detected, production can proceed with none issues up to a deliberate upkeep stop. The components can then be replaced quickly and simply by releasing the cassette for the assembly.

The hermetically tight design of the process diaphragm pump does extra than simply guarantee dependable continuous operation. It is also a central component for fulfilling the stringent hygiene provisions that the spray tower software is subject to. The Lewa triplex maintains a hermetically tight area without dynamic seals, guaranteeing utterly clean and aseptic manufacturing situations. All pump heads that come into contact with the product are also electropolished, which makes it attainable to make sure FDA-compliant pump operation.
Because the pump may be cleaned in place (CIP) using totally different alkaline and acidic brokers and with out prior dismantling, it’s potential to meet the particular necessities for child meals as nicely. The provisions for child food are 1,000 instances more stringent than those for different products in the food sector. Thanks to the hermetically tight design, electropolishing, and CIP cleansing, we had been capable of rule out any contamination of the pumped medium and clearly meet the required hygiene commonplace.

The first quote was received in June of 2018 and in September of the identical 12 months, DSM Nutritional Products AG placed an order for the triplex process diaphragm pump. In operation since April 2019, the pump has turn into an indispensable a half of production at the plant in Sisseln.
“In each phase of the challenge, Lewa Nikkiso Switzerland demonstrated fast response instances and well-founded experience, which made a key contribution to implementing the project successfully,” says Ibald. “Our specifications with regard to high quality, robustness, and hygiene were adopted to the letter on this project. As a outcome, our manufacturing has become noticeably more efficient and reliable.”


Lewa develops applied sciences and provides solutions for the vast array of functions among its customers. เกจวัดแรงดัน are used primarily in the oil and gasoline business, in fuel odorization, in refineries and petrochemicals, in addition to within the production of plastics, detergents, and cleaners. Additional application areas include the chemical business, cosmetics industry, prescription drugs and biotechnology, food and beverage trade, and power utilities. For extra info, go to