I built one the same way a couple years ago. works great. i used to work in shops that had professional type pressure bleeders and they are the best way to get air out of any system. And the fastest too. My weed sprayer version works almost as good. The only difference in the proffesional style ones is you can run a bit higher pressure and they have all kinds of fancy adapters for multiple applications. Not really necessary if your just playing with a few types of vehilces.