Graco 24V226 2-Piece diaphragms (PT) or Standard Diaphragms Center Section Rebuild KitThe 24V226 2 Piece diaphragms (PT) or Standard Diaphragms Center Section Rebuild Kit from Graco that include: 1 x center shaft (108) 4 x hex nuts, serrated (104) 2 x center shaft bearings (107) 2 x center shaft u cups (106) 1 x air valve gasket (105) 8 x seat o rings (9) 2 x pilot valves (111) 2 x pilot valve receiver cartridges (109) 2 x retaining rings (113) 2 x receiver cartridge o rings (110) 1 x grease packet (112)