Used Knelson for sale. ICS equipment more | Machinio. Concentrator, Knelson, Mdl CVD32, ContinuousConcentrator, Knelson, Mdl CVD32, Continuous Knelson Gravity Concentrator, Model CVD32, Continuous, 30" diameter bowl, 2stage, rougher/scavenger, New 2000, fully automated with controls, includes two spare bowls and pinch valves; used one year only, excel...