Get current pricing for Marley, 3380 GPM Marley Cool Approx 1126 Ton Marley Cooling Tower. Model Nc8309e-2cs. Nc Class. Design Duty: 16.9 Mm Btu/hr, 3380 Gpm Flow Rate, From 95 Degrees F To 85 Degre . Product Category: Process Equipment, Sub Category: Process Heat Exchangers: