The Stem,fluid Valve, cataloged under National Stock Number 4820-01-453-8681, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Twc-Thevalve Company. Government technical data includes 4 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-453-8681 |
| Primary Part Number | N-11398-1-4 12IN PIECE 6 |
| Item Name | Stem,fluid Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Twc-Thevalve Company |
| Status | ACTIVE |
| Valve Type for Which Designed | GLOBE |
| Stem Actuating End Type | THREADED EXTERNALLY |
| Valve Size for Which Designed | 12.000 INCHES IN |
| Material | STEEL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| N-11398-1-4 12IN PIECE 6 PRIMARY | Twc-Thevalve Company (USA) |
| 7517-8-17-1 | Twc-Thevalve Company (USA) |
| Reference | Meaning |
|---|---|
| N-11398-1-4 | D/9 Drawing number reference only The Walworth Company |
| 7517-8-17-1 | C/1 Advisory reference — outside the item-of-supply concept The Walworth Company |
| N-11398-1-4 12IN PIECE 6 | 3/9 Design control — primary reference The Walworth Company |
NSN 4820-01-453-8681 is a Stem,fluid Valve, manufactured by Twc-Thevalve Company, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-453-8681 has 2 manufacturer part numbers on file: N-11398-1-4 12IN PIECE 6 (Twc-Thevalve Company), 7517-8-17-1 (Twc-Thevalve Company).
Key specifications for N-11398-1-4 12IN PIECE 6: Valve Type for Which Designed: GLOBE; Stem Actuating End Type: THREADED EXTERNALLY; Valve Size for Which Designed: 12.000 INCHES IN; End Item Identification: USED ON NIMITZ CLASS CVN. 4 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.