We recently upgraded to the IV pumps in the picture. Have had nothing but problems with the pumps beeping constantly about air bubbles (when there are clearly no bubbles to be seen) or high air pressure, when the IV flushes perfectly fine. The only thing these pumps are good for is giving me more exercise because of the amount of time I spend running around to shut them up! The company apparently added a valve at the end to help "fix" these problems, but I have yet to see a difference. Has anyone else experienced this?