The Valve,regulating,system Pressure, cataloged under National Stock Number 4820-01-489-1252, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 7 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-489-1252 |
| Item Name | Valve,regulating,system Pressure |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Flow Control Device | PISTON, SPRING LOADED |
| Renewable Seat Ring Type | PRESSED-IN |
| Body Style | STRAIGHT THRU W/OFFSET |
| Regulation Type | AUTOMATIC SINGLE STAGE |
| End Connection Quantity | 3 |
| Valve Loading Method | SPRING |
| 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 | X |
| Reference | Meaning |
|---|---|
| 740000-091 | 3/9 Design control — primary reference Prince Alexander Partners Inc Div Architecture Engieering and Economic Development |
| 720005-091 | D/9 Drawing number reference only Prince Alexander Partners Inc Div Architecture Engieering and Economic Development |
NSN 4820-01-489-1252 is a Valve,regulating,system Pressure, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-489-1252: Flow Control Device: PISTON, SPRING LOADED; Renewable Seat Ring Type: PRESSED-IN; Body Style: STRAIGHT THRU W/OFFSET; Regulation Type: AUTOMATIC SINGLE STAGE. 7 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.