Models Thickener - 22m 28 695 3 Valve Knife HW ø12"-Newcon 19 659 0 Valve Knife model KGD ø16"-Clarkson 12 169 0 Valve Knife model KGD ø12"-Clarkson 9 187 0 Valve Pinch ø16" 5 112 0 Valve Pinch ø12" 2 106 0