I have been using the standard vise grip clamps to open and close the infusion lines. The benefits of these is that they are easy to take on and off and have a good grip. The downside is that they don’t completely seal the hose sometimes and can damage the line. I have also tried some automotive hose pinch clamps like these - 
But, they don’t really seem to get a good seal and when you are in a hurry sometimes, the locking mechanism is a real PITA.
These little cheapy clamps work well enough but are slow to open and close. 
These look promising. Anyone try these or have other suggestions?

