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Accessory

Stop Valve Nano Default Title

$4.90 | Total :

Stop-Valve developed by the R-PUR R&D team
to completely block the exhaled air.

  • Free delivery from 85$
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  • Price in USD
Stop Valve Nano - $4.90
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Features

Interchangeable filter

Track the wear of your filter with the R-PUR mobile app. The filter needs to be replaced after 5 to 15 weeks of daily use

Discover our mobile app

One size fits all

In average, 99.98% of the air will be filtered thanks to the technical memory-foam face seal on our filters.

Discover your face hermeticity

Full filtration

Our patented technology is the first to filter nanoparticles called "very fine particles" PM0.05

Discover our patented filtration

Optimal comfort

The anti-perspirant Thermo-Control® technology keeps you cool in the summer and warm in the winter.

Discover our premium materials

Now on Truspilot 🌟

Average rating : 4,6/5 💫 - See what our buyers from around the world have to say about R-PUR on Truspilot

Go to Trustpilot

Easy to use

Fits easily onto your filter for instant use

Optimal breathability

Does not impair breathing in your mask

Need help ?

Frequently Asked Questions

Is our mask efficient against the virus?

We filter particles up to 20 nanometers in size, so we will filter out most existing viruses.

In the current case of Covid-19, the R-PUR mask will be able to protect you effectively but also to protect your close ones, thanks to our stop-valve system.


In addition to the protection capacity, we must also take into account the hermeticity component.

Indeed, according to the different face morphologies, your mask will be able to filter out 99.98% of the ambient air, which will make it your most effective ally against the spread.

You can learn more on our page Our Technologies

How long does a filter last?

Our algorithm Zephyr aggregates the average number of kilometers travelled with air pollution data. It calculates a precise date (the time)  when your filter will need to be replaced in order to guarantee optimal protection.

On average, the filter is replaced after 5 to 15 weeks of daily use, depending on your personal use and the level of exposure to air pollution.

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