Used 42 liter 316L-SS MBR BIO Bioreactor by MBR BIO Reactor AG Switzerland, machine no. 751. Rated for -15 psi to 46.5 psi/FV @ 302 deg. F. Jacket rated for -15 psi to 43.5 psi @ 302 deg. F. 316L stainless steel shell and 304 stainless steel jacket. 10.51 inch diameter x 28.5 inch straight side, front sight glass. Certified by Ludwig Edel Gmbh and Co. no. 90172/4, year 1992. National Board 100, U stamped.