National Stock Number
4820-00-168-1897
National Stock Number (NSN) 4820-00-168-1897, or NIIN 001681897, (valve,relief,pressure and temperature) has an unknown assigned date. NIIN 001681897 was cancelled on February 2, 1991, with a cancelled status of "Item is Cancelled - USE." This NSN was replaced by NSN 4820011691940. 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) 16996. [A VALVE DESIGNED TO RELEASE UNDER EXCESSIVE PRESSURE AND/OR EXCESSIVE TEMPERATURE BY OPENING AT A PREDETERMINED PRESSURE AND/OR TEMPERATURE. THERMOSTATICALLY OPERATED VALVES CLOSE WHEN THE PRESSURE IS RELIEVED OR THE TEMPERATURE IS REDUCED. FUSIBLE PLUG VALVES REQUIRE REPLACEMENT OF THE PLUG. SEE ALSO VALVE, SAFETY RELIEF AND VALVE, REGULATING. TEMPERATURE.]. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 4820001681897 does not contain precious metals.
This information was last updated on Jun 01, 2024.