National Stock Number
4820-01-189-1702
National Stock Number (NSN) 4820-01-189-1702, or NIIN 011891702, (valve,check) was assigned September 12, 1984 in the Federal Logistics Information System (FLIS). NIIN 011891702 was cancelled on June 2, 2001, with a cancelled status of "Item is Cancelled - USE." This NSN was replaced by NSN 4820012103488. This NSN does not replace any other NSNs.
There are no manufacturer part numbers associated to this NSN. ISO Group has several sources of supply for 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 does not have a critical feature such as tolerance, fit restrictions or application. Nuclear hardness properties have not been determined (not valid for input). There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 4820011891702 does not contain precious metals.
This information was last updated on Jul 01, 2025.