Why the Coffee Package need the Coffee Valve?

Maybe you are very confused for the coffee valve in your coffee package.Maybe you don't understand what is the coffee valve.

Now pls spend sometime to read this post.Welcome to share us your opinion about this post.

The green coffee will be roast by the roaster,and the coffee bean will release more and more co2 after roasting.Then pack the coffee into the coffee bags.

If your coffee bag without the coffee valve,the co2 will full of your bag,then your coffee bag will be exploded by the co2.

That is why you will find the coffee package with the coffee valve in it.The coffee valve can help you release the co2 outside the package. 

Maybe you also know the open pressure and the close pressure of the coffee valve.Pls check the below coffee valve:

The open pressure of the valve is :2.3-5.5 mbar.It means while the co2 in your coffee package arrival 2.3-5.5mbar,the coffee valve will begin to release the inside co2 outside the bag.

The close pressure of the valve is :less than 2mbar.It means while the co2 in your coffee package less than 2mbar,the coffee valve will stop releasing the co2 outside the bag,and keep the rest of coffee aroma in your coffee bag.That is why your client can smell the coffee aroma through the coffee valve on the package,to confirm this bag of coffee is fresh or not.

Welcome to share or discuss your opinion about the coffee valve with us.

Thank you for your time.

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