>> Search results for: 4C2640 NSN Search Results National Stock Number (NSN) Description 4820-01-171-4391, 4820011714391 VALVE,CHECK 4820-00-372-3779 , 4820003723779 VALVE,CHECK 4820-00-341-3911, 4820003413911 VALVE,CHECK 1 Related Inventory S8154C264-010 Readily AvailableAdd to RFQ4C2640-34820003413911Condition NSVALVE 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