Versaflo V-399 Air Supply Adapter for Tight-Fitting Respirators

Versaflo V-399 Air Supply Adapter for Tight-Fitting Respirators

A dedicated adapter prevents leaks and preserves the airflow workers rely on when handling dusts, mists, fumes, gases, or vapor mixes. The V-399 withstands long shifts, keeps pressure loss to a minimum, and supports operations in hot or confined areas.

SST compliance and 3M compatibility

NIOSH approved, the V-399 mates with Versaflo V-300 or V-400 valves and with 3M supplied-air systems (type C/CE). It pairs with 3M tight-fitting facepieces (6000, FF-400, etc.) and with filtration panels such as the R256-02-01. To organize the rest of your respiratory fleet, visit the Powered & Supplied-Air Respiratory Protection category.

Technical specifics and value-add

• Product code: RV399 (V-399 adapter)
• 3M code: 7100349539 | UPC: 00068060858658
• Type: high-pressure air-supply adapter for tight-fitting masks
• Compatibility: Versaflo V-300/V-400 valves, 3M SAR systems type C/CE
• Approval: NIOSH
• Packaging: one unit per box, made to order (estimated lead time 75 calendar days)
• Box size: 7.62 cm x 7.78 cm x 21.4 cm | gross weight 0.247 kg
• Key benefit: secure airflow transfer without pressure drop

Professional use and efficiency

• Attach the adapter to the V-300/V-400 valve, then connect the tight-fitting mask.
• Check seal integrity before entering the work zone.
• Adjust airflow via the regulator and monitor connections during long shifts.
• Depressurize, disconnect, and inspect sealing surfaces after use.

Storage, care, and service life

• Store in a clean, dry area away from solvents.
• Clean with a mild, non-corrosive solution; avoid abrasives.
• Inspect threads and seals before each shift; replace at the first sign of wear.
• Follow 3M pressure recommendations to preserve NIOSH compliance.

Expert Health and Safety (OHS) Tips

Regularly inspect the adapter for cracks or signs of wear to ensure the system remains airtight. Given the 75-day lead time, we strongly recommend ordering your replacement parts in advance to avoid any work interruptions.

FAQ about the Versaflo V-399 adapter

Why use a dedicated adapter instead of a generic fitting?

The V-399 is NIOSH approved and matches V-300/V-400 valves precisely, reducing leak or misalignment risks.

Can it feed loose-fitting headtops?

No. This model is for tight-fitting facepieces; hoods and helmets require their own breathing tubes.

Does it need periodic replacement?

Yes. Like any respiratory component, it must be inspected and swapped out when wear, leaks, or corrosion appear.

Need matching gear?

See: 3M 256-02-01 compressed-air filtration and control panel(R256/02/01), Versaflo V300 air control valve assembly(RV300), replacement filter 523-01-29(R523/01/29), compressed-air panel calibration kit(R529/04/49), air-supply adapter 100 cfm(R529/04/50), Versaflo TR-600 single-station smart charger(RVTR641), Versaflo TR-600 four-station smart charger(RVTR644), high-capacity Versaflo TR-600 battery(RVTR632), heavy-duty Versaflo TR-600 belt(RVTR626), and Series S hood for Versaflo systems(RS133L).See the “Accessories” tab at the bottom of the page.

Green text indicates hyperlinks to specific safety gear or reference material.