Unused Praj Industries 304 Stainless Steel Static Mixer. Internal rated 40 psi @ 230F. Outer pipe .236" wall thickness, mixing inner pipe is NPS 10 x SCH. 10. 2", 8", 14" inlets. 14" outlet. 10'L x 1'2"D. National Board stamp. Serial #06D058-M1311. Built 2008.