The Freshness Valve is the secret to keeping your coffee fresh in the Friis coffee storage canister. It is a one way valve which allows CO2 gas to escape, without allowing oxygen or other gases back in. It’s the CO2 gas which breaks down and destroys the coffee flavour over time. However, the valve does deteriorate over time and should be replaced every two months. This pack comes with 6 replacement valves and a date wheel to help remind you when to replace the valve.
Friis Coffee Canister Replacement Valves – 6 Pack