Mueller Accutherm model AT20 F-20 plate heat exchanger, National Board number 21597, 102 each 12"...

Mueller model LI1N-4/3-L111 ammonia plate chiller, (8) plate stations, (7) 45" x 96" dimpled refr...

Mueller plate and frame heat exchanger, model AT184 ISB-10, serial number 396463, 4 each 4" Tri-C...