Diaphragm Pump Repair Kit Check Ball Material PTFE Compatible with Grainger Part Number 6WY68 Compatible with Manufacturer Model Number G1FB1STTXNSX00 Diaphragm Material PTFE Number of Check Balls 4 Number of Diaphragms 2 Number of O-Rings 0 Number of Seals 2 Valve Type Ball Product Type Fluid End Repair Kit Media Intake Pressure (Maximum) 125 psi Compatible with Pump Type Air Operated Double Diaphragm Pump Includes (2) Diaphragms (4) Check Valves O-Rings Seals