The Valve,safety Relief, cataloged under National Stock Number 4820-01-528-1692, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Lockheed Martin Corporation. The record lists 4 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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.
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Bae Systems Container Solutions Inc (CAGE 056P0); Sey Tec, Inc. Dba Sey Tec Inc (CAGE 0FGC4); Summit Solutions of Colorado, L.l.c. Dba Summit Solutions of Colorado Llc (CAGE 65X05); Lockheed Martin Corporation (CAGE 04939) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-528-1692 |
| Primary Part Number | PPPP001 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Lockheed Martin Corporation |
| Status | ACTIVE |
| 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 |
|---|---|
| PPPP001 | Bae Systems Container Solutions Inc (USA) |
| PPPP001 | Sey Tec, Inc. Dba Sey Tec Inc (USA) |
| PPPP001 | Summit Solutions of Colorado, L.l.c. Dba Summit Solutions of Colorado Llc (USA) |
| PPPP001 PRIMARY | Lockheed Martin Corporation (USA) |
| Reference | Meaning |
|---|---|
| 10177021 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 4820PL1060790 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 4820-01-528-1692 is a Valve,safety Relief, manufactured by Lockheed Martin Corporation, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-528-1692 has 4 manufacturer part numbers on file: PPPP001 (Bae Systems Container Solutions Inc), PPPP001 (Sey Tec, Inc. Dba Sey Tec Inc), PPPP001 (Summit Solutions of Colorado, L.l.c. Dba Summit Solutions of Colorado Llc), PPPP001 (Lockheed Martin Corporation).
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.