National Stock Number
4820-00-451-4625
National Stock Number (NSN) 4820-00-451-4625, or NIIN 004514625, (valve,safety relief) was assigned May 17, 1971 in the Federal Logistics Information System (FLIS). NIIN 004514625 was cancelled on October 2, 1997, with a cancelled status of "Item is Cancelled - USE." This NSN was replaced by NSN 4820010911304. 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) 05488. [A VALVE DESIGNED TO AUTOMATICALLY RELEASE EXCESSIVE PRESSURES. IT IS ACTUATED BY STATIC PRESSURE UPSTREAM OF THE VALVE AND IS USED AS A SAFETY VALVE OR RELIEF VALVE, AND MAY BE SET TO CLOSE AT A PREDETERMINED PRESSURE. IT IS NOT DESIGNED FOR REGULATION OF CONTINUOUSLY FLUCTUATING LOADS. IT MAY BE INLINE OR CARTRIDGE (MANIFOLD) DESIGN. EXCLUDES:VALVE (1), RELIEF, PRESSURE AND TEMPERATURE.]. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 4820004514625 does not contain precious metals.
This information was last updated on Aug 01, 2025.