Wet End Repair Kit Check Ball Material PTFE Compatible with Grainger Part Number 4GGG4 Compatible with Manufacturer Model Number E4AA5T5A0 Diaphragm Material PTFE 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) 125 psi Compatible with Pump Type Air Operated Double Diaphragm Pump Compatible with Brand Versa-Matic