How to Attain High Accuracy Using Air-Operated Double-Diaphragm (AODD) Pumps

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Critical Component: Dosing Pump

Technology Unlimited prides itself on being a collaborative partner with its customers, so after meeting with representatives of the animal-feed producer, Brinkman knew a critical component in the system they would create would be the dosing pumps that would be used to inject the enzyme onto the animal feed.

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In addition to needing to have highly accurate dosing rates, the pumps would also need to be compatible with the other unique characteristics of this particular dosing process, including the handling of an enzyme that can reach high temperatures as it was being transferred and working with small dosing valves that are only 0.8 mm (0.03") in diameter.

The system requirements demanded a dosing pump that would be able to meet all of the various operational parameters for temperature, pressure, speed and flow rate. To identify the best solution, Brinkman turned to Holland Air Pumps, Oirschot, The Netherlands, a distributor of air-powered pumps for use in many industrial applications in Europe. Specifically, Brinkman asked Holland Air Pumps’ Commercial Director Gerrit Klaassen for a pump recommendation.

“We’ve been a partner with Holland Air Pumps for six or seven years,” said Brinkman. “We need someone who thinks along with us because it’s not only a pump we’re buying, we sell a total system so we need experience and specialization on every component in the device. We’ve known Holland Air Pumps for a long time and they always come up with the right pump.”

“Gerrit called me and said that he had a challenge where the customer needed a highly accurate dosing pump. We discussed the possibilities, the do’s and don’ts, and worked out the best possible solution,” continued Klaassen. “We needed a pump that could dose from two liters an hour (0.5 gph) to 60 liters an hour (16 gph) with the same pump, and that’s not possible with an electric pump. The customer also has a 24/7 production process everyday all year and can’t have it break down as any production stops cost a lot of money. So, we needed a pump that was very consistent and reliable.”

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