National Stock Number
4820-01-251-9842
National Stock Number (NSN) 4820-01-251-9842, or NIIN 012519842, (valve,exhaust control) has an unknown assigned date. NIIN 012519842 was cancelled on December 2, 1991, with a cancelled status of "Item is Cancelled as Duplicate." This NSN was replaced by NSN 2815013059833. 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) 07800. [A MANUALLY OPERATED VALVE HAVING ONE INLET AND TWO OUTLETS. IT IS DESIGNED TO CONTROL THE DIRECTION OF EXHAUST GASES INTO EITHER OF THE OUTLETS, ONE OUTLET DISCHARGING DIRECTLY INTO THE ATMOSPHERE, THE OTHER DISCHARGING UNDER WATER.]. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 4820012519842 does not contain precious metals.
This information was last updated on Aug 01, 2025.