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Tark, formerly North Co., developed the first hermetically sealed direct-drive centrifugal pumps (HDD's) for x-ray tube cooling. HDD's have the following unique characteristics:
Tark Oil Pumps:
DD5 HDD10 HDD30 HDD40
HDD60 HDD62 HDD80
No shaft seals, gaskets or O-rings
Housings are completely welded. Motor actually runs in the coolant.
This both cools it and ensures completely leak-free operation.
Ideal for clean system applications in which air, moisture, or contaminants cannot be tolerated
Much quieter and longer life than gear pumps
High flow, lower pressure

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Sales and Customer Service  |  420 Congress Park Dr.    Dayton, OH 45459     Phone: (937) 291-5783     Fax: (937) 434-9077

Manufacturing  |  35 Dunham Rd.    Billerica, MA 01821     Phone: (978) 663-8074     Fax: (978) 663-8764