Repair Kit, Check Ball Material PTFE, Compatible with Grainger Part Number 6CCP1, 6CCP3, Compatible with Manufacturer Part Number PD15P-FPS-PTT, PD15P-YPS-PTT, Diaphragm Material PTFE, Number of Check Balls 4, Number of Diaphragms 4, Number of O-Rings 20, Number of Seals 24, Valve Type Ball, Product Type Fluid End Repair Kit, Media Intake Pressure (Maximum) 120 psi, Compatible with Pump Type Air Operated Double Diaphragm Pump, Includes Balls, Diaphragms, O-Rings, Seals