Duckbill Kit, Check Ball Material Viton, Compatible with Grainger Part Number 6CCK0, Compatible Manufacturer Part Number PD03P-APS-0LT, Diaphragm Material PTFE, Number of Check Balls 4, Number of Diaphragms 4, Number of O-Rings 6, Number of Seals 8, Valve Type Duckbill, Product Type Fluid End Repair Kit, Media Intake Pressure (Maximum) 120 psi, Compatible with Pump Type Air Operated Double Diaphragm Pump, Includes All Fluid Section Replacement Parts Except the Ball Seat