How to Tell if My Airlock Is Working Properly?

Checking the Gasket Seal

To verify the airlock’s gasket seal, inspect the rubber gasket for any signs of damage or wear. A damaged gasket can compromise the airlock’s ability to function correctly. You can apply a small amount of petroleum jelly to the gasket to prevent it from drying out and to ensure a tight seal.

Observing Airlock Movement

Observe the airlock’s movement over a period of several days to ensure it’s functioning correctly. A healthy fermentation vessel will produce CO2 gas, causing the airlock to bulge and then return to its original shape. If the airlock is not moving, it may be a sign of an issue with the vessel, the fermentation process, or the airlock itself.

Verifying Vessel Pressure

Use a pressure gauge to verify the vessel’s pressure and ensure the airlock is working correctly. Most standard airlocks are designed to handle pressures between 3-5 PSI. If the pressure exceeds this range, the airlock may not function correctly, or it may burst. Keep in mind that pressure can build up quickly, so it’s essential to monitor the pressure regularly during the fermentation process.