Used Atlas 22 sq. ft. 316L stainless steel shell and tube heat exchanger. 6.625" diameter X 59.75" face to face length. Carbon steel shell rated 100/FV @ -20 to 300 degrees F. 316L stainless steel tube bundle rated 100/FV @ -20 to 300 degrees F. 316L stainless steel heads. (28) 5/8" tubes. 3" service inlets and 2" process inlets. Shell is single pass and tubes are (4) pass. S/N 9409. Built 1996. National Board Number 7935.