03-21-2010, 10:47 AM
Im pretty sure no matter what size vaccuum chamber you have they all say to use a 9cfm pump. I believe this to be a safe guard for any complaints. If you use the highest pull in a vaccume then that leaves no room for error & complaints. A simple safe guard & a guarantee of pulling as much air out as fast as possible. Honestly if your looking to cut costs your going to pay later down the track.

