The Stem,fluid Valve, cataloged under National Stock Number 4820-01-540-2322, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-540-2322 |
| Primary Part Number | PLC-11401 PIECE 4CP |
| Item Name | Stem,fluid Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Valve Type for Which Designed | GLOBE |
| Largest Outside Diameter | 0.688 INCHES NOMINAL IN |
| Stem Actuating End Type | SQUARE AND THREADED EXTERNALLY |
| Criticality Code Justification | ZZZY |
| Valve Size for Which Designed | 0.250 INCHES IN |
| Material | NICKEL ALLOY |
| Reference Number Differentiating Characteristics | CLEANING, PACKAGING, AND MARKING IAW THE LATEST REVISION OF MIL-STD-1330 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| PLC-11401 PIECE 4CP | Naval Inventory Control Point Mechanicsburg (USA) |
| 003901DCCP | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 003901DC | 3/1 Design control — primary reference U.S. Government activity |
| PLC-11401 | D/9 Drawing number reference only U.S. Government activity |
| PLC-11401 PIECE 4 | 5/1 Secondary reference U.S. Government activity |
NSN 4820-01-540-2322 is a Stem,fluid Valve, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-540-2322 has 2 manufacturer part numbers on file: PLC-11401 PIECE 4CP (Naval Inventory Control Point Mechanicsburg), 003901DCCP (Naval Inventory Control Point Mechanicsburg).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-549-6675. Verify interchangeability with system specifications before substitution.
Key specifications for PLC-11401 PIECE 4CP: Valve Type for Which Designed: GLOBE; Largest Outside Diameter: 0.688 INCHES NOMINAL IN; Stem Actuating End Type: SQUARE AND THREADED EXTERNALLY; Criticality Code Justification: ZZZY. 7 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.