The Valve,purge, cataloged under National Stock Number 4820-01-522-8141, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 2 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-522-8141 |
| Primary Part Number | 6758500 ASSY 48 |
| Item Name | Valve,purge |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| General Characteristics Item Description | 1.500 NPS SOCKET WELD CONNECTIONS DESIGNED TO MATE WITH 0.281 NOM WALL PIPE. MEDIA: WATER-OIL-GAS, 3300 PSI WP MAX AT 160 DEG FAHRENHEIT |
| Material | NICKEL ALLOY AND STEEL CORROSION RESISTING |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 6758500 ASSY 48 PRIMARY | Naval Sea Systems Command (USA) |
| 801-6758500 ASSY 48 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 2633-827-01 ASSY 48 | 5/2 Secondary reference U.S. Government activity |
| 6758500 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 4820-01-522-8141 is a Valve,purge, manufactured by Naval Sea Systems Command, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-522-8141 has 2 manufacturer part numbers on file: 6758500 ASSY 48 (Naval Sea Systems Command), 801-6758500 ASSY 48 (Naval Sea Systems Command).
Key specifications for 6758500 ASSY 48: Overall Height: 4.410 INCHES NOMINAL IN; General Characteristics Item Description: 1.500 NPS SOCKET WELD CONNECTIONS DESIGNED TO MATE WITH 0.281 NOM WALL PIPE. MEDIA: WATER-OIL-GAS, 3300 PSI WP MAX AT 160 DEG FAHRENHEIT; Overall Length: 5.620 INCHES NOMINAL IN; Special Features: ASSY WILL FUNCTION AS A VENT WHEN ORIENTATION IS POSITIONED UP TO 90 DEGREES ABOVE THE HORIZONTAL; WILL FUNCTION AS A DRAIN WHEN POSITIONED UP TO 90 DEGREES BELOW THE HORIZONTAL. 2 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.
NSN 4820-01-522-8141 has DEMIL Code D. Demilitarization may be required before disposal or transfer to non-military entities.
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.