National Stock Number
4820-01-171-1875
National Stock Number (NSN) 4820-01-171-1875, or NIIN 011711875, (valve,check) was assigned July 1, 1993 in the Federal Logistics Information System (FLIS). NIIN 011711875 was cancelled on July 2, 1993, with a cancelled status of "Item is Cancelled as Duplicate." This NSN was replaced by NSN 4820011367731. This NSN does not replace any other NSNs.
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.]. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 4820011711875 does not contain precious metals.
This information was last updated on Jul 01, 2025.