The Valve,safety Relief, cataloged under National Stock Number 4820-01-497-5268, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Circor Aerospace Inc. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-01-497-5268 |
| Primary Part Number | SE50038 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Circor Aerospace Inc |
| Status | ACTIVE |
| Material | PLASTIC BODY |
| 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 |
|---|---|
| SE50038 PRIMARY | Circor Aerospace Inc (USA) |
| WG1400012 | Wing Inflatables Inc (USA) |
| Reference | Meaning |
|---|---|
| SE50038 | 5/9 Secondary reference Circor Aerospace, Inc. Dba Sei Products |
| PRV-7 | 3/9 Design control — primary reference Circor Aerospace, Inc. Dba Sei Products |
NSN 4820-01-497-5268 is a Valve,safety Relief, manufactured by Circor Aerospace Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-497-5268 has 2 manufacturer part numbers on file: SE50038 (Circor Aerospace Inc), WG1400012 (Wing Inflatables Inc).
Key specifications for SE50038: Special Features: VALVE MAYBE LOCKED IN THE CLOSED POSITION WITH THE USE OF A PRV RETAINER, MODEL PVR-1; Material: PLASTIC BODY. 1 specification is 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.