National Stock Number
4320-00-391-9161
National Stock Number (NSN) 4320-00-391-9161, or NIIN 003919161, (water supply system,automatic) was assigned January 1, 1963 in the Federal Logistics Information System (FLIS). NIIN 003919161 was cancelled on May 1, 2004, with a cancelled status of "Item is Cancelled WITHOUT Replacement." There is no known replacement specified for this stock number. This NSN does not replace any other NSNs.
There is only one manufacturer part number associated with this NSN. One of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 2 suppliers. 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.
This NSN is assigned to Item Name Code (INC) 19731. [AN OPERATING ASSEMBLY DESIGNED TO STORE AND DELIVER WATER UNDER PRESSURE. IT AUTOMATICALLY RAISES WATER AS NEEDED, TO REPLENISH THE SUPPLY AND MAINTAIN THE PRESSURE AGAINST INTERMITTENT USE. IT CONSISTS ESSENTIALLY OF A TANK, PRESSURE; SWITCH, PRESSURE; PUMP; PRIME MOVER; CHECK VALVE; AIR VOLUME CONTROL VALVE AND NECESSARY PIPING CONNECTIONS.]. 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 4320003919161 does not contain precious metals.
This information was last updated on Aug 01, 2025.