Advanced Process Solutions Stainless Steel Corrugated Triple Tube Heat Exchanger-3 tubes. Model: T3WC-3x2.5x1x20. Initially used in food processing, these have 316 stainless steel product contact surfaces. Outer tube dimensions: 3 in. ID x 19 ft. 5 in. L, total holding capacity: 5 gallons. Intermediate tube dimensions: 2-9/64 in. ID x 19 ft. 5 in. L, total holding capacity: 4.4 gallons. Inner tube dimensions: 27/32 ID x 19 ft. 5 in. L, total holding capacity: 0.6 gallons. Inlets/outlets: (2) 2 in. dia. S-line fittings, (2) 1 ½ in. dia. S-line fittings, (2) 1 in. dia. S-Line fitting. Overall dimensions: 19 ft. 5 in. L x 6 in. W x 3 in. H.(ACN127).