Get current pricing for Pfaudler, 20 Sq Ft Pfaudler Ha 20 Square Feet Pfaudler Hastelloy Horizontal Heat Exchanger. Shell Rated 150 Psi And Full Vacuum @ 450 F, Tubes Rated 150 Psi @ 450 F. Type Bem 0 . Product Category: Process Equipment, Sub Category: Process Heat Exchangers: