Unused Allegheny Bradford Model number HE126900 4-Pass, Stainless Steel Shell and U-Tube Heat Exchanger, vacuum rated sanitary construction. Shell has (2) 4-1/2" diameter flange connections, includes (48) tubes, measuring approximately 5/16" OD with (2) 1-1/2" Tri-Clover fittings. 316 Stainless steel tubes, rated 150 PSI/FV at 350 degrees Fahrenheit to minus 20 degrees Fahrenheit, 304 Stainless steel shell rated 150 PSI / FV at 350 degrees Fahrenheit to minus 20 degrees Fahrenheit. Shell is insulated measuring 10" OD, 6" diameter Shell x 7'7" Length. National Board number 14143, Serial number 048311-1-1-1. New in 2019. Unused and in excellent condition. Received from pharmaceutical operation.