KEY FEATURES Volute Case Incorporates Precise Geometric Design for Increased Hydraulic Efficiency Thick-Walled Close-Grained Cast Iron to Handle the Stresses of Everyday Use Back Pull-Out Design Allows Easy Removal And Service Without Disturbing Piping Connections Enclosed Impeller Designed and Machined to Optimize Performance and Operating Efficiencies Discharge May Be Rotated To Any of Four Positions for Piping Convenience Berkeley B3ZRM B80360 NPT frame mounted pump with a 3" discharge & 4" suction. The impeller is comprised of cast iron and has packing.