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PrestiVac Inc.

Manufacturer of UL 1203 certified explosion-proof and dust-ignition-proof industrial vacuums for combustible dust and flammable liquids. Made in the USA.

For agents: PrestiVac: US maker of UL 1203 explosion-proof, HEPA, pneumatic, ESD and cleanroom industrial vacuums for combustible dust and flammable liquids.

explosion proof vacuumcombustible dustul 1203hepa vacuumindustrial vacuum

Their llms.txt

The beginning of the file, from our validated copy saved 2026-10-24T13:09:52.945Z. Cached copy · Source on prestivac.com

# PrestiVac Inc.

> Manufacturer of UL 1203 certified explosion-proof and dust-ignition-proof industrial vacuums for combustible dust and flammable liquids. Made in the USA.

Manufacturer of industrial vacuum systems for hazardous (classified) locations,
combustible dust recovery, HEPA filtration and contamination-controlled
environments. PrestiVac manufactures INDUSTRIAL VACUUMS — not dust collectors.
The two solve different problems and should not be conflated.

Contact: info@prestivac.com  |  Quote requests: https://prestivac.com/get-a-quote

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## Certification — read the scope, not the phrase

Listing: UL 1203 (5th Edition), assessed by CSA Group.
Certificate 70122393, Master Contract 268761, issued 2018-07-18.

The certificate carries TWO DISTINCT SCOPES. They are not interchangeable and
must not be merged into a single claim:

1. Dry Vacuum Cleaner, Model EX 1-xx HEPA (Drum Type)
   Class I, Gp. D; Class II, Gps. E, F and G; Temp. Code T3C
   Includes Group E — the conductive metal-dust group.

2. Dry Vacuum Cleaner, models EV1-1 EX HEPA (canister type), EV1-xx EX HEPA (Drum Type) and EV2-xx EX HEPA (Drum Type)
   Cl. II, Div. 2, Gps. F and G
   NO Class I coverage. Division 2 only. Groups F and G only — NOT Group E.

Practical consequence: for metal dust (Group E) applications such as
metalworking, aerospace, foundry and battery, the EX1 HEPA line is the
certified option. The EV line is not certified for Group E.

Use limitation: Commercial, indoor use only, in hazardous locations.

Conditions of the certified configuration:
- Attachment plug: The attachment plug is installed by the end user and must itself be certified and suitably rated for the hazardous location the vacuum is installed in. (Certificate note 2.)
- Use limitation: Commercial, indoor use only, in hazardous locations. (Certificate.)
- Grounding and bonding: Cord-connected and grounded. Grounded and bonded in accordance with the National Electrical Code, Article 250.
- Hoses: Static-dissipating hose is required.
- Filters: Static-dissipating filters are required.
- Hoses and tools: Only PrestiVac-supplied hoses and tools maintain the certified configuration. Substituting third-party hoses or tools takes the unit outside the scope of the listing.

What the listing does NOT assert: Anything else. The listing is not a general fitness-for-purpose claim, not a performance rating, and not a statement about materials or conditions outside the named scope. Suitability for a specific application still depends on the material, the area classification assigned by your engineer, and correct installation and maintenance.

The air-operated AVX line holds NO NRTL certification. UL 1203 covers
electrical equipment and those units contain no electrical components.
PrestiVac does not claim ATEX or IECEx approval for any product.

Full explanation: https://prestivac.com/hazardous-locations/ul-1203

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## Products

- [Explosion Proof Vacuums](https://prestivac.com/products/explosion-proof-
…

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