Pacific Bag One-Way Degassing Valves are designed to allow pressure to be released from an airtight package while not allowing external atmosphere (i.e. air with 20.9% O2) to enter the package. Pacific Bag offers two sizes of One-Way degassing valves, Model nos. 101 (Large) and 201 (Regular). The valves are supplied with filter paper (designation “NF”) and without a filter paper (designation “N”). The filter paper stops small particles from clogging the one-way valve.
When pressure inside a sealed package increases beyond the Valve Opening Pressure, a rubber disk in the valve momentarily opens to allow gas to escape out of the package. As gas is released and the pressure inside the package drops below the Valve Close Pressure, the valve closes.
Applications and Uses
Typical uses include: flexible packages for fresh roasted coffee (fresh roasted coffee generates gas inside the bag and also needs protection from Oxygen outside the bag) and large, bulk flexible packages which require the release of excess air from packages for palletization (e.g. 33 lbs. pet food bags).