ALLOY PRODUCTS MODEL 74 PRESSURE VESSEL T268621

This unit is a premium T-316L Stainless Steel variant of the Model 74. The "L" designation (Low Carbon) is a significant upgrade over standard 316, as it prevents "carbide precipitation" during welding, ensuring the vessel remains highly corrosion-resistant even at the weld seams. The 155 PSI rating is a slight step up from the standard 140 PSI models, and the Serial No. 75541-030 indicates a mid-to-late 1990s production run. Biotech-Grade T-316L Stainless.