Kinney (Tuthill) vacuum pumps: independent brand profile
Kinney rotary piston pumps are the heavy, slow-turning machines found on vacuum furnaces and coating lines, and Kinney liquid ring pumps run central lab vacuum systems for decades. The brand came to Ingersoll Rand with Tuthill’s vacuum and blower business. This profile sorts out who owns what, and shows that half the AI assistants have not caught up.
Independent profile by Vacuum Engineering Tools. We are not affiliated with Kinney, receive no payment and do not sell pumps. Quotes are the opinions of individual users, not statements of fact by us. Brand names belong to their respective owners.
In short
Kinney is a vacuum pump brand from Tuthill, an American manufacturer dating back to 1892. Its vacuum and blower business, including Kinney rotary piston pumps (KT, KTC, KC), KLRC liquid ring pumps and Roots-type boosters, is now part of Ingersoll Rand, which reported the Tuthill acquisition in its results for the fourth quarter of 2020. On Reddit, a lab chemist describes a Kinney KLRC central vacuum pump “running for >30 years with very little maintenance”.
Verified facts
What users say
Kinney appears on Reddit in a single but telling context: chemists running central vacuum for whole lab floors. In r/Chempros a user reports a two-stage Kinney KLRC that has run for more than 30 years with very little maintenance. In r/uhv, users compare Kinney and Stokes for large fore pumps.
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Vacuum pump for central vac
“Have a Kinney KLRC two stage that has been running for >30 years with very little maintenance. Covers multiple lab spaces and works like a charm ...” Google preview
Reddit blocks automated access, so thread titles, links and previews come from Google’s index of reddit.com (October 2026). Previews are excerpts, not the full comment.
From specialist forums
Kinney pumps are long-lived industrial machines that change hands on the used market, so they appear mostly as listings and rebuild offers rather than reviews.
No quotable forum posts found.
AI fact-check: what ChatGPT, Gemini, Perplexity and Claude say
On 9 October 2026 we asked all four assistants the same question (who owns Kinney, headquarters, founding, best-known series and what buyers say) and checked every answer against the manufacturer’s own pages.
| Question | ChatGPT (gpt-5.5) | Gemini (3.5 Flash) | Perplexity (Sonar) | Claude (Sonnet 5.5) | Verified |
|---|---|---|---|---|---|
| Who owns it? | ✓ Ingersoll Rand | ~ “MD-Tuthill”, acquired by Ingersoll Rand in 2021 | ✗ Tuthill Corporation, private | ✗ Tuthill family, private | Ingersoll Rand (Tuthill vacuum and blower business) [Source] |
| Headquarters | ~ Davidson, NC (Ingersoll Rand HQ) | ? Springfield, Missouri | ? Springfield, Missouri | ~ Burr Ridge, Illinois (Tuthill HQ) | Not stated on pages we could access [Source] |
| Founded | ? Kinney 1908, “Frederick M. Kinney” | ? Kinney 1907, “James P. Kinney” | ✓ Tuthill 1892 | ✓ Tuthill 1892, “Jay Tuthill” | Tuthill since 1892; Kinney’s own founding date not verifiable [Source] |
| Series named | ✓ KT/KTC, KLRC, KD/KDH | ✓ KT, KC/KCV, KLRC | ✓ KC, KT, KLRC | ✓ KC/KT, KTC, KLRC | KT, KTC, KC rotary piston; KLRC liquid ring [Source] |
✓ correct · ~ partly right or outdated · ✗ wrong · ? cannot be checked against an official source. Answers condensed. Only Perplexity used web search; the other models answered from training data.
Ownership is out of date in half the answers. Perplexity and Claude still describe Kinney as part of privately held Tuthill, but Ingersoll Rand’s own investor presentation for the fourth quarter of 2020 reports the Tuthill acquisition. Our directory had the same gap until this research. On Kinney’s own founding, ChatGPT and Gemini give different years and founders (1908 and “Frederick M. Kinney”, 1907 and “James P. Kinney”), and neither can be confirmed.
Search interest compared
Google Trends data compared with other process vacuum brands (liquid ring, ejectors, rotary piston), web search, October 2021 to October 2026. “kinney vacuum pump” has little search volume overall, but 15 % of this group’s searches in the US and 8 % in Mexico: almost all interest in Kinney comes from North America.
Average search interest 2021–2026 (index)
Where people search for Kinney
How to read this: of every 100 Google searches for these five brand names in United States, 15 were for Kinney; the most searched brand there, Nash, had 31. It shows relative interest, not sales or market share.
| Country | Kinney share | Rank | Most searched |
|---|---|---|---|
| United States | 15 % | 4th of 5 | Nash (31 %) |
| Mexico | 8 % | 4th of 5 | Robuschi (60 %) |
Pulled on 9 October 2026 via DataForSEO. Terms compared: “nash vacuum pump”, “robuschi”, “sihi pump”, “graham ejector”, “kinney vacuum pump”. Relative values, not absolute search volumes; non-English searches are not included.
Technology fingerprint
Computed from our directory of 25 manufacturers: which technologies Kinney offers and how common each is in the market.
| Technology | Makers in our directory | |
|---|---|---|
| Rotary piston | 1 of 25 | rare |
| Liquid ring | 9 of 25 | |
| Roots | 11 of 25 |
Not in the range: Rotary vane, Screw, Claw, Scroll, Turbomolecular, Diaphragm
Closest alternatives
Manufacturers with the largest overlap in pump technologies.
- Robuschi Sister brand
- Busch Vacuum Solutions
- Flowserve SIHI
- Nash Sister brand
- Graham
Product series at a glance
| Series | Technology | What it is for |
|---|---|---|
| KT / KTC | Rotary piston | Oil-sealed rotary piston pumps for vacuum furnaces, coating and heavy industrial duty. |
| KC | Rotary piston | Compact rotary piston pumps. |
| KLRC | Liquid ring | Liquid ring pumps, often used for central lab vacuum. |
| Boosters | Roots | Roots-type boosters to raise pumping speed at low pressure. |
Typical fit
- Vacuum furnaces and heat treating
- Central lab vacuum (KLRC)
- Coating and metallising
- Chemical process vacuum
Useful calculators
Official owner resources
Find service for Kinney
Manufacturer service and independent shops in the US.
Vacuum Pump Service Directory (US) →
Frequently asked questions
Who owns Kinney vacuum pumps?
Kinney came to Ingersoll Rand with Tuthill’s vacuum and blower business. Ingersoll Rand reported the Tuthill acquisition in its fourth-quarter 2020 results. Tuthill Corporation itself, which dates back to 1892, continues with its other product lines.
What is a Kinney rotary piston pump?
An oil-sealed pump in which an eccentric piston rolls inside a cylinder. It is slower-turning and more robust than a rotary vane pump, which suits large flows of dirty gas on vacuum furnaces and coating lines.
How long do Kinney pumps last?
They are known for very long service lives. One lab chemist on Reddit reports a Kinney KLRC liquid ring pump running central vacuum for more than 30 years with very little maintenance.
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