Our coffee bag valve's specification                                              

coffee valve's instructions                                                       

1. Our coffee bag valves comprise of a food-grade PE shell, sealing rubber strips, sealing oil,which can enhance the performance.
2. You can make some concentrated pinholes on a coffee bean bag and put a coffee bag valve on top of the holes.  
3. It can exhaust the carbon dioxide produced by coffee beans while preventing the outside air from entering the bag,so as to lower the pressure inside the bag which would otherwise have the bag burst.
4. By doing so, you can keep coffee beans dry and original.
5. it is fit for coffee bean packaging, it with good degassing performance and reliable quality