Wet End Repair Kit, Check Ball Material Buna-N, Compatible with Grainger Part Number 20LR22, Compatible with Manufacturer Model Number E5PP2R259D, Diaphragm Material Buna-N, Number of Check Balls 4, Number of Diaphragms 2, Number of O-Rings 4, Number of Seals 0, 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 Versamatic, Standards Not Applicable. This item has been restricted from sale in the following state (s): []