The Stem,fluid Valve, cataloged under National Stock Number 4820-01-445-6839, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Rix Industries. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-01-445-6839 |
| Primary Part Number | 33-APLG1002-2 |
| Item Name | Stem,fluid Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Rix Industries |
| Status | ACTIVE |
| Valve Type for Which Designed | RELIEF |
| Largest Outside Diameter | 2.125 INCHES NOMINAL IN |
| Criticality Code Justification | FEAT |
| Material | PLASTIC |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| APLG1002-1 REV B | Naval Sea Systems Command (USA) |
| 33-APLG1002-2 PRIMARY | Rix Industries (USA) |
| Reference | Meaning |
|---|---|
| APLG1002-1 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
| 33-APLG1002-1 | 5/9 Secondary reference Rix Industries |
| 33-APLG1002-1 | 5/9 Secondary reference American Machine Works Filter Div |
NSN 4820-01-445-6839 is a Stem,fluid Valve, manufactured by Rix Industries, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-445-6839 has 2 manufacturer part numbers on file: APLG1002-1 REV B (Naval Sea Systems Command), 33-APLG1002-2 (Rix Industries).
Key specifications for 33-APLG1002-2: Valve Type for Which Designed: RELIEF; Largest Outside Diameter: 2.125 INCHES NOMINAL IN; Criticality Code Justification: FEAT; Special Features: WEAPON SYSTEM ESSENTIAL. 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.