Learn more about Kinney KT Piston Pumps

Learn more about Kinney KT Piston Pumps

August 29, 2018

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by Katy Manning

What are the features of the KT design?

Kinney KT® single stage high vacuum pumps are of “Triplex” design having a single shaft with three sets of cams and pistons which operate in parallel in such a way as to reduce vibration to the lowest levels ever found in a pump this size. Tuthill's exceptional balancing technique reduces the magnitude of pump movement (deflection) while simultaneously reducing the dynamic forces transmitted through the flexible mounting pads furnished with each pump to the values shown in the table above.

As a result of these extremely low vibration characteristics, the installation costs of Triplex pumps are always lower than those of conventional pumps. KT pumps are continuously lubricated by a built-in oil pump which forces oil to the bearing surfaces at all pressures. This permits continuous pump operation at any pressure up to and including atmosphere. On Model KT pumps, reverse oil flow is controlled by means of a mechanical check valve. Oil feed pump pressure can be used for alarm or fail-safe interlock. Since these pumps are internally balanced, only one shaft seal is required providing a significant advantage over externally balanced pumps which require two shaft seals.

Corrosion resistant sleeve bearings are used instead of ball bearings, which are not suitable for general vacuum pump service when they are lubricated by the sealing oil. The advantages of a Kinney Triplex pump are inherent in its design. Caged slide pins far outlast two-piece slide pins. A special umbrella type discharge baffle reduces oil loss to levels not attainable in other pumps. A single gas ballast adjustment provides vapor-handling capability and reduces oil changes by preventing condensable vapors from contaminating the oil. Each pump operates within the rating of its standard TEFC motor throughout the entire operating pressure range. Series KT pumps will produce an ultimate pressure of 10 microns Hg Abs. or less (McLeod Gauge) when using Kinney® KV100 oil.

How does the KT piston pump work?

Kinney KT Operation
Gas is drawn into the pump through a common inlet, channeled to the three piston slides and into the space behind the pistons as they rotate. The gas ahead of the pistons is compressed and forced out the discharge valves. As the gas is forced through the pump, sealing oil is mixed with the discharged gas and the discharged mixture is channeled into the separator, which is located in the reservoir, and there the gas is separated from the oil. Sealing and lubricating oil is provided by the oil pump which is mounted on the non-drive head and driven by direct coupling to the vacuum pump drive shaft. The oil pump provides forced feed oil circulation at all operating pressures including atmosphere.
All models have a channeled drive shaft with an opening at each cam to distribute oil through the pump.
Oil is taken from the reservoir at a point some distance above the reservoir bottom. This provides an area for impurities to collect for draining.

Interested in getting a quotation for a KT piston pump? Contact Provac Sales, Inc. for a quotation today. View our collection at https://www.provac.com/pages/search-results?q=kt

 

 

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