50 Sq. Ft. Allegheney Bradford Sanitary Construction 316 Stainless Steel horizontal shell and tube exchanger. U-Tube. Rated 150 psi @ 375 F on the shell; 150 psi @ 375 F on the tubes. Built 1999. Serial # 3929-1-1-1. U-Stamped. Shell is Approx 7" dia.x 9' length. Shell openings: 1-1"; 1-3"; 2-1" NPT. Unit has (36) 7/16" ID tubes.