Didn't know TP was srill around. Been to their showroom (in Canfield, Ohio) before and they also offer some nice, high capacity compressors as well.
Sandblasting or bead blasting requires large amounts of compressed air at high pressure so a sizeable compressor is also required as well as moisture removal from the compressed air.
I have a Quincy QP 5.5 horse compressor on a 150 gallon receiver and an IR Reftigerated air dryer to keep the air conditioned....