Used Yula 14 Pass Shell & Tube Heat Exchanger, Approximately 660 Square Feet, Model WC-14M-240CS, 304L Stainless Steel, Horizontal. 304L Stainless steel shell rated 100 psi at 40 to 250 degrees F. (126) 1” diameter x 240” long 304L stainless steel tubes rated 150 psi at 40 to 250 degrees F. 304L Stainless steel tubesheet, 304 stainless steel clad heads. Openings for tubes (2) 3", openings for shell 14", 2". National Board# 12654, serial# 20272, built 2007.