National Stock Number
4810-01-291-1797
National Stock Number (NSN) 4810-01-291-1797, or NIIN 012911797, (valve,linear,directional control) was assigned December 24, 1988 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. 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 somewhat common among different platforms, belonging to 2 different weapons systems.
Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Aug 02, 2004, this NSN's acquisition method was noted as: Acquire directly from the actual manufacturer, whether or not the prime contractor is the actual manufacturer. This part requires engineering source approval by the design control activity in order to maintain the quality of the part. An alternate source must qualify in accordance with the design control activity's procedures, as approved by the cognizant Government engineering activity. Valid AMCs: 1, 2, 3, 4 and 5.
This NSN is assigned to Item Name Code (INC) 61929. [A MANUALLY OR POWER OPERATED VALVE HAVING THREE OR MORE PORTS. THE DIRECTION OF THE FLOW THROUGH THE VARIOUS PORTS IS CONTROLLED BY EITHER ONE OR MORE RECIPROCATING SLIDE(S) OR SPOOL(S) WITH RECESS AREAS WHICH MATE WITH PORTS IN AN INTEGRAL OR REPLACEABLE PORTED SLEEVE, OR ONE OR MORE POPPET(S). IT IS DESIGNED TO CHANGE THE DIRECTION OF FLUID FLOW FROM ONE VALVE PORT TO ANOTHER. AN OFF (NO FLOW) POSITION IS NOT A FLOW PATTERN. THE VALVE IS DESIGNED TO ACTUATE VARIOUS COMPONENTS OF A FLUID SYSTEM. A POWER OPERATED VALVE MAY HAVE A MANUAL OVERRIDE. FOR ITEMS WHICH STOP, START, OR CHANGE THE FLOW OF FLUID, SEE: VALVE, SOLENOID. EXCLUDES VALVE, PLUG. SEE ALSO SERVOVALVE, HYDRAULIC; BODY SECTION, WORKING, LINEAR DIRECTIONAL CONTROL VALVE; AND VALVE ASSEMBLY.]. The item is a non-aviation Critical Safety Item (CSI) whose failure will result in serious damage to equipment or serious injury or death to personnel. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 4810012911797 does not contain precious metals.
This NSN is associated to Schedule B 8481809050: other taps, cocks, valves, etc., nesoi. The Schedule B End Use is listed as industrial machines, other. NAICS classification category 332911: industrial valve manufacturing.
This information was last updated on Aug 01, 2025.