Are you looking for vacuum equipment or a pressure pot?
We have been using a camattini vacuum machine produced with Nest Technologies.
http://www.nesttechnologies.com/cam.htm
It is an interesting system. It is specifically designed for casting prototypes. The big benefit of the camattini system is the two chamber injection system. You load a hydrolic piston with a two chamber mixing cartridge, it forces the material into a mixing tip, and you shoot it directly into your mold. You may do all this under vacuum or inject it and then put under vacuum. The vacuum releases all the large air pockets. We then immediately put the mold under pressure into a pressure pot, or regulator.
You can generally find all sizes of pressure pots from a paint surplus source. I have seen more and more pressure pots outfitted with internal heating strips for curring the resin with pressure and heat. I’ve heard that heat speeds up the curring process and gives you stronger components.
I hope I helped steer you in the right direction.