The Valve,safety Relief, cataloged under National Stock Number 4820-01-429-1351, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 3 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 4820-01-429-1351 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | CANCELLED |
| Adjustable Pressure Range | +3000.0 TO 4500.0 POUNDS PER SQUARE INCH LBS |
| Media for Which Designed | AIR SINGLE RESPONSE |
| Valve Discharge Flow Rate | 6000.0 CUBIC FEET PER MINUTE |
| Acquisition Status | CANCELLED |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| S1E10033 | D/9 Drawing number reference only U.S. Government activity |
| V3D10256-05 | 3/2 Design control — primary reference U.S. Government activity |
| S1E10033 ITEM 1 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| S1E10033 P/N V3 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
NSN 4820-01-429-1351 is a Valve,safety Relief, classified under FSC 4820, Valves, Nonpowered. Status: cancelled.
6 possible matches (shared part number, not a government interchangeability claim): 4730-01-434-5383, 4730-01-434-5386, 4730-01-434-5387. Verify interchangeability with system specifications before substitution.
Key specifications for 4820-01-429-1351: Adjustable Pressure Range: +3000.0 TO 4500.0 POUNDS PER SQUARE INCH LBS; Media for Which Designed: AIR SINGLE RESPONSE; End Item Identification: WEAPON SYSTEM E/I LOS ANGELES CLASS SSN (688); Valve Discharge Flow Rate: 6000.0 CUBIC FEET PER MINUTE. 3 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 4820-01-429-1351 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.
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.