Diaphragm Pump Repair Kit, Check Ball Material Santoprene, Compatible with Grainger Part Number 6WY82, Compatible with Manufacturer Model Number DS2II, HDF3M, Diaphragm Material Santoprene, Number of Check Balls 0, Number of Diaphragms 2, Number of O-Rings 0, Number of Seals 0, Valve Type Flap, 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