Pump Repair Kit Check Ball Material Santoprene Compatible with Grainger Part Number 29AU52 Compatible Manufacturer Part Number S07B1K1KPNS000 Diaphragm Material Santoprene Number of Check Balls 4 Number of Diaphragms 2 Number of O-Rings 0 Number of Seals 4 Valve Type Ball Product Type Fluid End Repair Kit Media Intake Pressure (Maximum) 100 psi Compatible with Pump Type Air Operated Double Diaphragm Pump Compatible with Brand Sandpiper