lve size will be equal to or less than the Top or Bottom Width. If the valve size is less than the Top or Bottom Width, the valve is considered to be “Reduced”.
Bag Size:
A: Face Width is always listed first.
B: Finished Length is always listed second.
C: Top Width is always listed third. If the Top Width and Bottom Width are the same, this will be the last dimension in the specification.
D: Bottom Width may be listed fourth. This is less common.
Valve size will be equal to or less than the Top or Bottom Width. If the valve size is less than the Top or Bottom Width, the valve is considered to be “Reduced”.
Sizing a Valve Bag：
Establish desired product weight to be packaged in pounds or kilograms
Determine bulk density of product. If loose and packed densities are known, the bag should be sized for the loose bulk density.
Divide desired product weight by bulk density to determine bag volume required.
Based on the desired volume, identify appropriate bag size “starting” point (see chart). If the required volume lies between two figures, select the larger number.
Convert bag size based on desired/required dimensions
Always verify estimated bag size by filling sample bags