National Stock Number
4820-01-312-6566
National Stock Number (NSN) 4820-01-312-6566, or NIIN 013126566, (valve,liquid-check) was assigned December 21, 1989 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.
There is only one manufacturer part number associated with this NSN. None of the associated part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by one supplier. Today, there are no suppliers listed as an Active supplier for this NSN. Of the active suppliers, there are no suppliers that are deemed design controlled or valid supply parts.
This part number has not been procured by the US Government in over 5 years.
Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on May 11, 2006, this NSN's acquisition method was noted as: Suitable for Competitive Acquisition. (Potential sources shall include dealers/distributors.) The Government physically does not have in its possession sufficient, accurate, or legible data to purchase this part from other than current source(s). (NOTE: This code is applicable only to parts under immediate buy requirements and only as long as the deficiency is under review for resolution and appropriate recoding.) Valid AMCs: 1, 2, 3, 4 and 5.
This NSN is assigned to Item Name Code (INC) 45114. [A NORMALLY OPEN VALVE WHICH PERMITS THE PASSAGE OF AIR OR GASES IN BOTH DIRECTIONS BUT PREVENTS THE PASSAGE OF LIQUIDS IN ONE DIRECTION. THE ACTION IS CONTROLLED BY A BUOYANT FLOW CONTROL DEVICE WHICH RISES AGAINST ITS SEAT WHEN LIQUIDS ARE PRESENT THEREIN.]. This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 4820013126566 contains an unknown precious metal.
This information was last updated on Aug 01, 2025.