The Valve,calibrated Flow, cataloged under National Stock Number 4820-01-321-6447, 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7 specifications, cited from the U.S. Government catalog. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-321-6447 |
| Item Name | Valve,calibrated Flow |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Body Style | STRAIGHT THRU |
| Regulation Type | AUTOMATIC SINGLE STAGE |
| End Connection Quantity | 2 |
| Material | STEEL SEAT |
| Media for Which Designed | HYDRAULIC OIL |
| Maximum Inlet Pressure Rating | ERR-060 |
| Valve Discharge Flow Rate | 10.0 GALLONS PER MINUTE |
| 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 |
|---|---|
| 500252100 PART 05 | 3/2 Design control — primary reference U.S. Government activity |
| 1512-1-10.0 | 5/9 Secondary reference Vonberg Valve, Inc. |
| PD-278-10.0 | 5/9 Secondary reference Automotive Inc Fluid Power Systems Components Div Sub of United Technologies Corp |
| 500252100 | D/9 Drawing number reference only U.S. Government activity |
| 1496-1-10.0 | 5/9 Secondary reference Imperial |
| 5002521-05 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
NSN 4820-01-321-6447 is a Valve,calibrated Flow, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-321-6447: Body Style: STRAIGHT THRU; Regulation Type: AUTOMATIC SINGLE STAGE; End Connection Quantity: 2; Material: STEEL SEAT. 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.