The Valve,calibrated Flow, cataloged under National Stock Number 4820-01-573-0848, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 14 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-01-573-0848 |
| Primary Part Number | 516-8180947-F25 |
| Item Name | Valve,calibrated Flow |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Flow Control Device | DIAPHRAGM |
| Second End Relationship with First End | IDENTICAL |
| Body Style | STRAIGHT THRU |
| Face to Face Distance | 3.469 INCHES NOMINAL IN |
| First End Style Designator | SOCKET |
| Temp Rating | 160.0 FAHRENHEIT MAXIMUM DEGF |
| End Connection Quantity | 2 |
| Valve Size | 0.500 INCHES IN |
| First End Connection Type | UNTHREADED INTERNAL PIPE |
| First End Nominal Pipe Size Accommodated | 0.500 INCHES IN |
| Material | COPPER ALLOY BODY |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR FLOW CONTROL DEVICE |
| Furnished Items | TAILPIECE AND UNION NUT |
| Valve Discharge Flow Rate | 3.5 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 |
| Part Number | Manufacturer |
|---|---|
| 516-8180947-F25 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 2354-1111AS | 3/2 Design control — primary reference U.S. Government activity |
| 11-05-0036 | 5/2 Secondary reference U.S. Government activity |
NSN 4820-01-573-0848 is a Valve,calibrated Flow, manufactured by Naval Sea Systems Command, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-573-0848 has 1 manufacturer part number on file: 516-8180947-F25 (Naval Sea Systems Command).
Key specifications for 516-8180947-F25: Flow Control Device: DIAPHRAGM; Second End Relationship with First End: IDENTICAL; Body Style: STRAIGHT THRU; Face to Face Distance: 3.469 INCHES NOMINAL IN. 14 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.