1 Unused ABEC 100 Litre – 316 Stainless Steel Jacketed Vacuum Vessel. National board number: 1692. Manufactured in 2018 – still in OEM crate. Vessel Internal (Vacuum) MAWP: 45 psi at 350°F. External MAWP: 15 psi at 350°F. MDMT: -20°F at 45 psi. Shell: 250 IN. Comes with mixer, and load cells.