Diaphragm Pump Repair Kit Check Ball Material Acetal Diaphragm Material Neoprene Number of Check Balls 4 Number of Diaphragms 2 Number of O-Rings 9 Number of Seals 9 Valve Type Ball Product Type Fluid End Repair Kit Media Intake Pressure (Maximum) 120 psi Compatible with Pump Type Air Operated Double Diaphragm Pump Compatible with Brand Ingersoll Rand / ARO Includes All Fluid Section Replacement Parts Except the Ball Seat Media Temperature (Minimum) 0 Degrees F