Repair Kit Check Ball Material PTFE Compatible with Grainger Part Number 6CCR5 Compatible with Manufacturer Model Number PD20E-FES-PTT PD20P-FKS-KTT PD20P-FPS-PTT PE20P-FKS-KTT-AD0 PE20P-FPS-PTT-A00 PE20P-FPS-PTT-A0L PE20P-FPS-PTT-AD0 PE20P-FPS-PTT-ADF PE20P-FPS-PTT-AS0 Diaphragm Material PTFE Number of Check Balls 4 Number of Diaphragms 4 Number of O-Rings 20 Number of Seals 28 Valve Type Ball Product Type Fluid End Repair Kit Media Intake Pressure (Maximum) 120 psi