Billy,
Not a direct answer to your question, but...
The last time my wife was in the hospital, when we left I snagged her IV line and took it with me (I asked the nurse for permission). Now when I need to bleed brakes or change shoes/pads, I hook this tube up to the bleed screw. I put the other end in the BOTTOM of a clean jar. I then open up the valve and bleed the lines or whatever I have to do. With the IV line attached to the bleed screw, I get virtually NO air back into the system. This works for me AND its free.
Rance
PS: Before someone states the obvious, yes, you'll need to clean/rinse the tubing before use.
