If this is what you used on my brakes at Road Atlanta get this.... Damn that thing worked great... Hey Matt if your ever in the neighborhood cmon over..LOL
I’ve had really good luck with the small autozone mityvac tool. I use the at mityvac mv6835 work though. It’s a lot smaller than the 7400 so it pulls a vacuum quicker.
For a shop with compressed air? Buy an air bleeder. Worth the money, just gotta keep it clean. Will suck all the old fluid out in a few seconds if you're doing a flush.
My bleed kit is the cup that came with a mityvac and a better piece of tygon tubing. I always find that I manually bleed after using vacuum. So when the mityvac broke, I didn't bother to replace it.
Hand pump mityvac has always worked well for me. If bleeding a dry line was giving me issues, usually meant air leaking around the bleeder threads. A little Teflon tape seals it up. Usually take the Teflon off after I get fluid in the system just to make sure a bit doesn't tear off and block a passage. Finish off by pumping the master.
Another thing make sure the bleeders haven’t been over tightened and crushed. Makes bleeding much more difficult when the round hole get smashed flat.
I have this one and it’s brilliant: Capri Tools Vacuum Brake Bleeder https://www.amazon.com/dp/B00OM751EC/ref=cm_sw_r_cp_api_glt_fabc_8PNYZJ7SKTFS76FMXEGX
I have this same bleeder. Works great and I find it absolutely handy when I want to be lazy to drain my front diff in my truck and not drop the pan... I find that a vacuum works well for flushing fluid but I always finish bleeding by hand because its easier to see the air bubbles in the line. With a vacuum, it's hard to tell when you get all the bubbles out. I also used Stalhbus bleeders and that was a game changer!
How did you make out John? I was in Harbor freight today and suddenly they have a huge array of fluid vacuum pumps. Even the big 1.9 gallon type..