>> Search results for: 42156C NSN Search Results National Stock Number (NSN) Description 4820-01-225-4239, 4820012254239 VALVE,CHECK 4470-00-922-8465 , 4470009228465 SEAT,VALVE 4820-01-098-4688, 4820010984688 DISK,VALVE 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