The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-01-341-4271, 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 13 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-01-341-4271 |
| Primary Part Number | 280977-0006L1 |
| Item Name | Valve,regulating,fluid Pressure |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Flow Control Device | POPPET |
| Second End Relationship with First End | NOT IDENTICAL |
| First End Style Designator | SOCKET |
| Temp Rating | 165.0 FAHRENHEIT MAXIMUM DEGF |
| Criticality Code Justification | ZZZY |
| Second End Nominal Pipe Size Accommodated | 0.250 INCHES IN |
| End Connection Quantity | 2 |
| Valve Loading Method | SPRING |
| First End Connection Type | UNTHREADED INTERNAL PIPE |
| Material | NICKEL ALLOY 400 OR NICKEL ALLOY R-405 BODY |
| Material | NICKEL ALLOY 400 OR NICKEL ALLOY R-405 FLOW CONTROL DEVICE |
| Media for Which Designed | AIR OR GAS |
| Reference Number Differentiating Characteristics | MATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS |
| 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 |
|---|---|
| 280977-0006L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 280977-0004L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 280977-0004 | 5/1 Secondary reference U.S. Government activity |
| 280977-0006 | 3/1 Design control — primary reference U.S. Government activity |
NSN 4820-01-341-4271 is a Valve,regulating,fluid Pressure, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-341-4271 has 2 manufacturer part numbers on file: 280977-0006L1 (Naval Inventory Control Point Mechanicsburg), 280977-0004L1 (Naval Inventory Control Point Mechanicsburg).
Key specifications for 280977-0006L1: Flow Control Device: POPPET; Second End Relationship with First End: NOT IDENTICAL; First End Style Designator: SOCKET; Temp Rating: 165.0 FAHRENHEIT MAXIMUM DEGF. 13 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.