This industrial sized screw pump has a maximum flow of 253 cfm. Operating at a deep vacuum as low as .02 Torr, this screw pump thrives in chemical applications, where standard industrial products cannot. Standard pump uses Kalrez o-rings, as well as PEEK coating to ensure this pump runs efficiently in your process. The VSB 320/430 is powered by C-Face NEMA 10 and 15 hp motors respectively.