Coffee Bean Shop coffee is packed in one-way valve, foil lined bags for ultimate freshness.
Roasted Coffee releases CO2 which means that over time the pressure inside a coffee bag increases “blowing the bag up like a balloon”. To solve this situation one way degassing valves were created. The valves are made of PET. These valves let the CO2 escape without allowing air to re-enter the bag, resulting in a fresher bag of coffee. When the pressure reaches 0.1375psi (9.5 millibar) the valve will release the air from bag automatically until the pressure decreases to 0.0375psi(2.6millibar). Degassing valves are a coffee industry standard and are highly recommended. We only provide the best quality valves from Switzerland and Italy.