National Stock Number
4820-00-720-1941
National Stock Number (NSN) 4820-00-720-1941, or NIIN 007201941, (valve,check) was assigned January 1, 1963 in the Federal Logistics Information System (FLIS). NIIN 007201941 was cancelled on February 2, 1996, with a cancelled status of "Item is Cancelled - USE." This NSN was replaced by NSN 4820008536864. This NSN replaces 4 stock numbers: 4820004859393, 4820008045016, 1650000643520, 4935009900466.
There are no manufacturer part numbers associated to this NSN.
This part number has not been procured by the US Government in over 5 years.
This NSN is assigned to Item Name Code (INC) 05487. [A VALVE PERMITTING FLOW IN ONE DIRECTION ONLY. IT DOES NOT HAVE A STEM, EXCEPT WHEN EQUIPPED WITH A LEVER AND WEIGHT AND HAS NO PRESSURE ADJUSTMENT. IT MAY BE INLINE OR CARTRIDGE (MANIFOLD) DESIGN.]. This item is a Flight Safety Critical Aircraft Part (FSCAP). There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 4820007201941 does not contain precious metals.
This information was last updated on Aug 01, 2025.