GEEEZ- Just pay the $39.00- the hanson UAT (of which you borrowed the pic) is a BVM uat with a couple of changes/improvements. (I dont consider the Festo fitting for the suction line an improvement as Festos leak under suction BTW). What are you going to save $5-10 bucks doing it yourself-and spend hours to search out all the parts and then assemble it?? And BTW the center bag support festo attachment is a customed machined part by both Hanson and BVM. Have fun. Scott