>> Search results for: Y19552A3 NSN Search Results National Stock Number (NSN) Description 4820-99-983-0407, 4820999830407 SEAT,VALVE 4820-99-411-0892 , 4820994110892 DISK,VALVE 5330-99-477-5060, 5330994775060 PACKING 4820-99-842-0331 , 4820998420331 VALVE,STOP-CHECK 1 Related Inventory Search You can use this search box to continue searching. Search parameters can include any combination of characteristics, specifications, description, partial part numbers, NSN or other stocking number. Special characters are not needed and are automatically stripped before searching. Do you sell this part? Become part of our growing pool of certified suppliers. Send Information