PLAATO Valve V2 - Pressure Drop Equalizing Valve

PLAATO Valve V2 - Pressure Drop Equalizing Valve

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The PLAATO Valve connects between your fermenter and airlock and equalizes any negative pressure that might be present in the system. It eliminates suck-back during fermentation or cold crashing, ensuring your airlock remains full and functioning properly.

Many brewers have experienced the sinking feeling of finding your airlock completely empty or heard the sound of water or sanitizer flowing back from the blow-off vessel to the fermenter. This phenomenon 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 colder, temperature-controlled room after pitching yeast, or when going from fermentation temps down to cold crash temps. To offset this negative pressure, the fermenter will suck in solution (and then air) from the airlock or blow-off vessel. The PLAATO Valve features an internal silicone umbrella valve that only opens if a vacuum is created due to temperature drop.

The PLAATO Valve fits most airlocks including standard 3-piece and S-shaped airlocks and is made out of FDA-approved food grade polypropylene with an internal silicone valve. It comes ready with optional 16 x 65 PPI activated carbon filters for the inlet.


Item # FE671
Shipping Eligible for Free Shipping Program
Availability California - In Stock
Pennsylvania - In Stock
Weight 0.03 LBS
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Why did you choose this?
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Helpful with cold crashing
William Flynn on Dec 18, 2019
Helpful with cold crashing
William Flynn on Dec 18, 2019
Good price.
Michael T on Dec 17, 2019
Good price.
Michael T on Dec 17, 2019
I plug this thing in, and I get on CO2 discharge, I remove it and it co2 goes through airlock. any suggestions?
Brian West on Sep 14, 2020
BEST ANSWER: This unit is designed to let CO2 through until you reach the desired pressure. It should be discharging co2 when you connect it similar to an airlock except it will eventually stop and allow you to maintain a certain pressure inside the fermenter.

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Rated 5 out of 5
Useful piece of gear
Simple solution to a common problem. This valve goes between your fermenter and airlock. It stays closed during normal fermentation, but opens to prevent liquid in your airlock or blowoff vessel from being sucked into the fermenter when there is a negative pressure differential. There are little filters in the valve so that only clean air can get in. This is helpful when first cooling wort before pitching or at the end when cold crashing.
September 17, 2020
1 year ago