PLAATO Pressure Drop Equalizing Valve V2 connects between your fermenter and airlock/or blow-off-tube. It equalizes any negative pressure that might be present in the system, eliminating suckback.
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.