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This image shows the interior nameplate of a pressure vessel or boiler component. The equipment is certified by Superior Boiler Works (Superior BLR, WKS) and is designed for steam service at a maximum allowable working pressure (MAWP) of 15 PSI and water pressure of 30 PSI. The vessel has a heating surface area of 253 square feet with a minimum relief valve capacity of 2024 pounds per hour. The unit is identified with serial number 9370, year of manufacture 1984, and National Board number 9370. The nameplate also references the manufacturer's specification standards (SN 9370, YB 1984, NATL BD 9370). This appears to be historical industrial equipment documentation, likely used for reference, maintenance, or regulatory compliance purposes related to pressure vessel specifications and certifications.