The Stem,fluid Valve, cataloged under National Stock Number 4820-01-511-9002, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Velan Valve Corp.. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-511-9002 |
| Primary Part Number | 2563-057-063 |
| Item Name | Stem,fluid Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Velan Valve Corp. |
| Status | ACTIVE |
| Valve Type for Which Designed | GATE |
| Stem Actuating End Type | THREADED EXTERNALLY |
| Valve Size for Which Designed | 0.750 INCHES IN |
| Material | STEEL COMP 410 |
| 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 |
|---|---|
| 23399 PC 6, 3/4IN | Velan Valve Corp. (USA) |
| 2563-057-063 PRIMARY | Velan Valve Corp. (USA) |
| Reference | Meaning |
|---|---|
| 23399 | D/9 Drawing number reference only Velan Valve Corp. |
NSN 4820-01-511-9002 is a Stem,fluid Valve, manufactured by Velan Valve Corp., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-511-9002 has 2 manufacturer part numbers on file: 23399 PC 6, 3/4IN (Velan Valve Corp.), 2563-057-063 (Velan Valve Corp.).
Key specifications for 2563-057-063: Valve Type for Which Designed: GATE; Stem Actuating End Type: THREADED EXTERNALLY; Overall Length: 5.4375 INCHES NOMINAL IN; Valve Size for Which Designed: 0.750 INCHES IN. 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.