They would be laboring for vacuum bagging, cause they run a lng tme. I would use a new one only for bagging. If you do the infusion correctly, you will be sealing the bag first and finding leaks. Then once you start the infusion you want to run it between 15 and 20 and once the infusion is done keep it on til it gels or use a paint pressure pot and make sure it is dropped to about 10
are these pumps not designed to be run for a long time then? looks like i will be giving infusion a go then 
I meant that you can’t rely on them for lots of bagging jobs. they will eventually get worn out and cause you to get a different pump.
They are great for learning and growing a business.
cool,if it lasts for 100 parts then that would be great
It will last for more than that, it may need some rebuild somewhere near there.
I have several pumps one similar to that for degassing of urethanes and silicon rubbers, one that is made by sargeant welch that is a wet vane system with a 17.5 cfm, and one that is wet vane also made by wlech pump and is about a 1954 vintage that has 35.5 cfm. I have it connected to a 300 gallon tank for my vacuum lines around the shop. I can suck the air down to 29 inches of mercury in about 4.5 minutes with that one.
(I knew a girl like that once)