>> Search results for: 3978921 NSN Search Results National Stock Number (NSN) Description 4820-01-413-2323, 4820014132323 VALVE,STOP-CHECK 4820-01-594-0114 , 4820015940114 VALVE,SPEC 1 Related Inventory Repair 397892-1Condition RPVALVE Readily AvailableAdd to RFQ 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