The Valve,safety Relief, cataloged under National Stock Number 4820-01-574-1957, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-574-1957 |
| Primary Part Number | 793424 ITEM NO 12CP |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Criticality Code Justification | ZZZY |
| Reference Number Differentiating Characteristics | CLEANING, PACKAGING, AND MARKING IAW THE LATEST REVISION OF MIL-STD-1330 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| 793424 ITEM NO 12CP | Naval Inventory Control Point Mechanicsburg (USA) |
| 581015-009 | Pacific Consolidated Industries Llc (USA) |
| 793424 ITEM NO 12CP | Pacific Consolidated Industries Llc (USA) |
| Reference | Meaning |
|---|---|
| 581015-009CP | 3/1 Design control — primary reference Naval Inventory Control Point Mechanicsburg |
NSN 4820-01-574-1957 is a Valve,safety Relief, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-574-1957 has 3 manufacturer part numbers on file: 793424 ITEM NO 12CP (Naval Inventory Control Point Mechanicsburg), 581015-009 (Pacific Consolidated Industries Llc), 793424 ITEM NO 12CP (Pacific Consolidated Industries Llc).
Key specifications for 793424 ITEM NO 12CP: Criticality Code Justification: ZZZY; Part Name Assigned by Controlling Agency: VALVE, ANGLE RELIEF; End Item Identification: COMPRESSOR ASSY. BYPASS; Reference Number Differentiating Characteristics: CLEANING, PACKAGING, AND MARKING IAW THE LATEST REVISION OF MIL-STD-1330. 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.
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.