Used approximately 288 square foot surface area shell and tube heat exchanger. Tube side T304L stainless steel rated 150 psi at 375 degrees F. Shell side T304L stainless steel rated 150 psi at 375 degrees F. (220) .50" diameter straight tubes X 10' long. Shell 11.628" OD X 117.63" Long. Tube in/out (2) 2.198" Sanitary fittings. Shell in/out (2) 4" NPS. Shell vent/drain (2) 1" NPT. NB 11329. SN13633. Built by Enerquip in 2011. (Qty - 2 available)