National Stock Number
4820-00-947-5231
National Stock Number (NSN) 4820-00-947-5231, or NIIN 009475231, (valve,shuttle) has an unknown assigned date. NIIN 009475231 was cancelled on December 2, 1990, with a cancelled status of "Item is Cancelled as Duplicate." This NSN was replaced by NSN 4820011999504. This NSN does not replace any other NSNs.
There are no manufacturer part numbers associated to this NSN. ISO Group has a strong supply network for this NSN, with 11 sources of supply.
This part number has not been procured by the US Government in over 5 years.
This NSN is assigned to Item Name Code (INC) 20572. [A VALVE HAVING ONE OUTLET AND TWO INLETS THAT ARE USUALLY OPPOSITE EACH OTHER. IT HAS A FLUID PRESSURE OPERATED PISTONLIKE ITEM, CALLED A SHUTTLE, THAT CONTROLS EITHER INLET. IT IS COMMONLY USED TO PROVIDE AN EMERGENCY PASSAGE FOR FLUID IN AN AIRCRAFT HYDRAULIC OR PNEUMATIC SYSTEM IN CASE OF LOSS OF PRESSURE IN THE NORMAL SERVICE LINES.]. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 4820009475231 does not contain precious metals.
This information was last updated on Aug 01, 2025.