The Valve,regulating,oxygen System P, cataloged under National Stock Number 4820-01-397-7118, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier. Government technical data includes 25 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-01-397-7118 |
| Primary Part Number | 1828AS125-1 |
| Item Name | Valve,regulating,oxygen System P |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| Status | ACTIVE |
| Flow Control Device | DISK |
| First End Thread Direction | RIGHT-HAND |
| Second End Relationship with First End | IDENTICAL |
| Body Style | STRAIGHT THRU |
| Regulation Type | 1ST STAGE MANUAL, 2ND STAGE AUTOMATIC |
| First End Thread Class | 2B |
| First End Style Designator | GASKET SEAL |
| Temp Rating | 125.0 FAHRENHEIT NOMINAL DEGF |
| Criticality Code Justification | FEAT |
| Material Document and Classification | KEL-F-81, MINNESOTA MINING AND MFG CO MFR REF SINGLE MATERIAL RESPONSE PACKING |
| Material Document and Classification | KEL-F-81, MINNESOTA MINING AND MFG CO MFR REF SINGLE MATERIAL RESPONSE SEAT |
| End Connection Quantity | 2 |
| Manual Control Method | LEVER |
| First End Connection Type | THREADED INTERNAL BOSS |
| Material | COPPER ALLOY BODY |
| Material | PLASTIC SEAT |
| Material | STEEL CORROSION RESISTING FLOW CONTROL DEVICE |
| Material | PLASTIC PACKING |
| Material | STEEL CORROSION RESISTING STEM |
| Media for Which Designed | OXYGEN, GASEOUS |
| Maximum Inlet Pressure Rating | ERR-060 |
| Furnished Items | INLET PRESSURE GAGE AND OUTLET PRESSURE GAGE |
| Thread Size and Series/type Designator | 7/16-20 UNF FIRST END |
| Outlet Pressure Setting | ERR-060 |
| Filter | NOT INCLUDED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| 1828AS125-1 PRIMARY | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
| Reference | Meaning |
|---|---|
| 1828AS125 | 7/2 Vendor item drawing reference Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| 283813-0002 | 5/2 Secondary reference U.S. Government activity |
NSN 4820-01-397-7118 is a Valve,regulating,oxygen System P, manufactured by Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-397-7118 has 1 manufacturer part number on file: 1828AS125-1 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier).
Key specifications for 1828AS125-1: Flow Control Device: DISK; First End Thread Direction: RIGHT-HAND; Second End Relationship with First End: IDENTICAL; Body Style: STRAIGHT THRU. 25 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.