Is it possible to build a good and reliable automated vacuum system for basic industrial applications with inexpensive standard parts? Yes, if you choose parts from a reputable and reliable supplier offering high quality and extensive capacity.
Nobody in their right mind would use a sledgehammer to crack a walnut or pay a science professor to teach four-year olds. Both are far too over-qualified and expensive for the respective tasks. The same can sometimes be true for advanced technology. Basic operations can be performed with less complex and less costly tools - they simply do not warrant the employment of high-tech and state-of the-art solutions.