Chester-Jensen Co Falling Film Plate Chiller. Model: B-4-OT-4-36. S/N: 7927. Capacity: 90 nominal tons. Refrigerant: flooded ammonia. (4) 5 ft. W x 3 ft. 7 ft. H stainless steel sections. Number of corrugations: 36. MAWP: 200 psi @ 200 °F. Radius: flat. Shell thickness: 0.045 in. Reservoir capacity: 125 gal. Inlets: (1) 2 in. dia. port (water/solution), (1) 3 in. dia. refrigerant infeed port. Outlets: (1) 2 in. dia. NPT discharge, (1) 2 in. dia. NPT overflow, (1) 3 in. dia. refrigerant suction port. Overall dimensions: 7 ft. 6 in. L x 2 ft. 8 in. W x 6 ft. 10 in. H.(ACN310–79).