Get current pricing for Super Changer, UX-126-MJ-30 Approx. 60 Sq.ft. Superchanger Plate Heat Exchanger. (28) 12 X 34 Plates. Model Ux-126-mj-30. Nb 17312. Unit Rated 300 Psi @ 350 F. . Product Category: Process Equipment, Sub Category: Process Heat Exchangers: