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The PLAATO Valve - Pressure Drop Equalizing Valve

Connecting between your fermenter and airlock/or blow-off-tube, it equalizes any negative pressure that might be present in the system, eliminating suckback.


See our Limited Bundle with PLAATO Valve included (30 days open purchase).



  • Eliminates Suck-back
    • During Fermentation & Cold Crash
  • Empty Airlock Protection
    • No suck-back minimizes the chance of an empty airlock & air entering
  • Transfer protection
    • Lets you keep the airlock on while transferring

Many brewers experiences suddenly empty airlocks, or water flowing from the blow-off vessel to the fermenter. 

This phenomena is due to temperature changes that in turn lead to negative pressure in the fermenter. This is seen the moment a fermenter is placed in a temperature controlled room after pitching of yeast, or during cold crash. 


To offset this negative pressure, the fermenter will either suck in water from an airlock, or suck in air, or in some rare cases implode under the forces of this pressure.

In most cases air will be introduced in the fermenter in the hours before the fermentation starts, and during cold crash.


PLAATO Valve has an incorporated umbrella silicon valve that only opens if a negative pressure occurs, bypassing the airlock and hence eliminating suckback.


Especially developed for brewers

The PLAATO Valve is made out of FDA-approved food grade PP and has an incorporated umbrella silicon valve as working principle. It comes ready with optional 65PPI activated carbon filters for the inlet (16pcs), and fits most airlocks and fermenters.


Oxygen-free fermentation

As stated above, rapid changes in temperature will always introduce air, water or partial implosion in/to the fermenter. In order to obtain a non-oxidizing atmosphere, the headspace in the fermenter must therefore be flushed with CO2.

  • For cold-crash, the oxygen in the headspace is already replaced by CO2, so introduction of small amounts of oxygen is not a significant source of oxidation.

  • If you are aiming for an oxygen-free fermentation, the Plaato valve is designed to be connectable to a bag containing CO2/inert gas, maintaining a non-oxidizing atmosphere in the fermenter. 



See our Limited Bundle with PLAATO Valve included.



We are confident that you’ll love PLAATO Airlock. Try it for 30 days and in the unlikely event that you want to return it, we offer a free return and a full refund.


What countries do you ship to?

We currently ship to the following countries:  Australia Austria Argentina Belgium Bulgaria Canada Canary Islands Croatia Cyprus Czech Republic Denmark Estonia Finland France Germany Greece Hong Kong Hungary Iceland Ireland Italy Jersey Latvia Liechtenstein Lithuania Luxembourg Malta The Netherlands New Zealand Norway Poland Portugal Romania Slovakia Slovenia Spain Sweden Switzerland United Kingdom United States, Uruguay

What is your warranty policy

We offer a one-year limited warranty on all purchases. Read more about our warranty policy here.

What payment options do you offer?

We offer Credit Card (VISA, MasterCard and American Express), PayPal and Apple Pay.

What is your return policy?

We offer a 30-day return policy. This includes a full refund and free return, no questions asked. See our Satisfaction Guarantee above.