Anest Iwata scroll vacuum pumps: independent brand profile
Anest Iwata is better known for spray guns and airbrushes, but its ISP dry scroll pumps are a quiet favourite as oil-free backing pumps in labs and instruments. This profile covers the verifiable facts, the company’s claim to have pioneered the air-cooled scroll vacuum pump, and the founders AI assistants invent for it.
Independent profile by Vacuum Engineering Tools. We are not affiliated with Anest Iwata, 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
Anest Iwata Corporation (Kōhoku-ku, Yokohama, Japan; founded May 1926) is a listed maker of air compressors, vacuum equipment, spray guns and coating systems. It started out in coating equipment and later expanded into compressors and vacuum. Its ISP series of oil-free, air-cooled dry scroll vacuum pumps (models such as ISP-90, ISP-250C and ISP-500B) is widely used for clean backing vacuum, and the company says it was the first in the world to develop air-cooled, oil-free scroll vacuum pumps. We found no Reddit or forum discussion of its vacuum pumps.
Verified facts
What users say
A search of Google’s index of reddit.com for Anest Iwata scroll pumps returned only dealer listings. Reddit talk about Iwata is about airbrushes and spray guns, not vacuum pumps.
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
ISP pumps are common on the used and refurbished market and are often sold rebuilt by vacuum specialists, a sign of a long-lived, serviceable design.
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 Anest Iwata, 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? | ✓ Public company in Japan | ✓ Listed, TYO 6381 | ✓ Publicly traded | ✗ “Majority-owned by former Hitachi group interests” (unsure) | Publicly listed (TYO 6381) [Source] |
| Headquarters | ✓ Yokohama | ✓ Yokohama | ✓ Yokohama | ✓ Yokohama | Kōhoku-ku, Yokohama [Source] |
| Founded | ? 1926, “Suekichi Iwata” | ? 1926, “Sakuhei Iwata” | ? 1926, brothers “Hatsutaro and Sukezo Iwata” | ✓ 1926, founder unknown | May 1926; founder not confirmed in sources we checked [Source] |
| Series named | ✓ ISP, DVSL, SLP | ~ ISP, DVS, DIS | ✓ ISP, DVSL, GVSU | ✓ ISP | ISP series and related dry scroll models [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.
One company, three founders. ChatGPT named “Suekichi Iwata”, Gemini “Sakuhei Iwata” and Perplexity the brothers “Hatsutaro and Sukezo Iwata”; none appeared in the sources we could check. Claude said it did not know the founder, which was the most accurate answer. Claude also suggested Hitachi-related majority ownership, which nothing supports: Anest Iwata is a listed company.
Search interest compared
Google Trends data compared with other laboratory and high-vacuum brands, web search, October 2021 to October 2026. “anest iwata scroll” barely registers in Google Trends; most searches for the Iwata name concern its spray guns and airbrushes. Scroll pump buyers search by model number (ISP-250, ISP-500) instead.
Average search interest 2021–2026 (index)
Where people search for Anest Iwata
How to read this: of every 100 Google searches for these five brand names in India, 3 were for Anest Iwata; the most searched brand there, Vacuubrand, had 37. It shows relative interest, not sales or market share.
| Country | Anest Iwata share | Rank | Most searched |
|---|---|---|---|
| India | 3 % | 5th of 5 | Vacuubrand (37 %) |
| United States | 1 % | 5th of 5 | Welch (38 %) |
Pulled on 9 October 2026 via DataForSEO. Terms compared: “agilent vacuum”, “welch vacuum pump”, “knf pump”, “vacuubrand”, “anest iwata scroll”. Relative values, not absolute search volumes; non-English searches are not included.
Technology fingerprint
Computed from our directory of 25 manufacturers: which technologies Anest Iwata offers and how common each is in the market.
| Technology | Makers in our directory | |
|---|---|---|
| Scroll | 5 of 25 | rare |
Not in the range: Rotary vane, Screw, Claw, Liquid ring, Roots, Turbomolecular, Diaphragm
Closest alternatives
Manufacturers with the largest overlap in pump technologies.
Product series at a glance
| Series | Technology | What it is for |
|---|---|---|
| ISP (e.g. ISP-90, ISP-250C, ISP-500B) | Scroll | Air-cooled, oil-free dry scroll vacuum pumps with low noise and vibration. |
Typical fit
- Oil-free backing for turbopumps
- Analytical instruments and leak detectors
- Clean lab vacuum
- Load locks and transfer chambers
Useful calculators
Official owner resources
Frequently asked questions
Who owns Anest Iwata?
Anest Iwata Corporation is a listed Japanese company (TYO 6381) headquartered in Yokohama. It was founded in May 1926.
Did Anest Iwata invent the scroll vacuum pump?
Anest Iwata says it was the first in the world to develop air-cooled, oil-free scroll vacuum pumps. The scroll principle itself is much older; Anest Iwata’s claim concerns practical air-cooled, oil-free vacuum versions.
What is the Anest Iwata ISP series?
A range of oil-free, air-cooled dry scroll vacuum pumps, with models such as the ISP-90, ISP-250C and ISP-500B, used as clean backing and lab pumps.
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