Rotary Piston Filler- 21 Valve. Model P-21-L. Fill ports: 1 in. Centers between valves: 5-1/4 in. Celeron change parts set for 3-3/4 in. dia. bottle x 5-1/4 in. H. 3-3/4 in. dia. pistons x 8 in. stroke. Conveyor to worm to star infeed (worm & drive, and star); counter-clockwise rotation; 90 degree discharge. Infeed starwheel has 6 pockets. Pocket diameter: 4.625 in. Distance between pockets: 7.375 in. Star diameter: 11.375 in. Stainless steel product contacts. (XMR108).