Diaphragm Pump Repair Kit, Check Ball Material PTFE, Compatible with Grainger Part Number 6WY83, Compatible with Manufacturer Model Number SB1, SGN5A, Diaphragm Material PTFE, Number of Check Balls 4, Number of Diaphragms 2, Number of O-Rings 0, Number of Seals 0, 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