A machine for filling a flexible pouch having a fitment assembly, a gripper and a filler. The fitment assembly having a tap and a fitment mounted to the pouch body. The gripper operable to remove the tap from the fitment, retain the tap during filling operations, and mount the tap back onto the fitment after filling operations. The fitment assembly having a tap operable to be mounted on the fitment in a transport position and a fixed position, wherein in the transport position a first predetermined amount of force is required to remove the tap. In the fixed position, a second predetermined amount of force is required to remove the tap. The second predetermined amount of force is substantially larger than the first predetermined amount of force.