Models Thickener - 22m 29 709 3 Valve Knife HW ø12"-Newcon 19 667 0 Valve Knife model KGD ø16"-Clarkson 12 170 0 Valve Knife model KGD ø12"-Clarkson 9 187 0 Valve Pinch ø16" 5 115 0 Valve Pinch ø12" 2 107 0