device to let air out but not water under pressure
My research project needs a device which can let air escape but not the water under about 3000psi pressure. I have a container with waters. But air may go in during filling process. The air is not allowed for a particular reason. After close the container, we will add pressure by pushing to about 3000psi. We need the air escapes from the container during this process but not the water. Temperature is room temperature.
Does this device exist? any name/link will be appreciated.
thanks,