APV Plate Heat Exchanger. Model R56-S, S/N 16926. AGC Engineering Proflow 5 upgraded. 316 Stainless steel plates: (95). Section 1: (61) plates; Section 2: (21) plates. Section 3: (13) plates. Heat transfer surface area: Approx. 467 sq. ft. Fixed end ports: (4) 3 in. Movable end ports: (4) 3 in. Divider 1 ports: (3) 2-1/2 in. Divider 2 ports: (1) 2-1/2 in., (1) 2 in. Overall dimensions: 94 in. L x 22 in. W x 77 in. H.