The Valve,calibrated Flow, cataloged under National Stock Number 4820-01-211-8893, 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 16 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-211-8893 |
| Primary Part Number | 5541749-2 |
| Item Name | Valve,calibrated Flow |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Flow Control Device | DISK |
| First End Thread Direction | RIGHT-HAND |
| Second End Relationship with First End | NOT IDENTICAL |
| Second End Thread Class | 2A A |
| First End Thread Class | 2B |
| First End Style Designator | FLARED |
| End Connection Quantity | 2 |
| Second End Thread Direction | RIGHT-HAND |
| First End Connection Type | THREADED INTERNAL TUBE |
| Surface Treatment | PASSIVATE OUTSIDE |
| First End Outside Diameter Tube Accommodated | 0.375 INCHES NOMINAL IN |
| Material | STEEL BODY |
| Second End Connection Type | THREADED EXTERNAL TUBE |
| Thread Size and Series/type Designator | 9/16-18 UNF FIRST END |
| Thread Size and Series/type Designator | 9/16-18 UNF SECOND END |
| Valve Discharge Flow Rate | 1.1 GALLONS PER MINUTE AND 1.4 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 |
|---|---|
| 5541749-2 PRIMARY | Naval Sea Systems Command (USA) |
NSN 4820-01-211-8893 is a Valve,calibrated Flow, manufactured by Naval Sea Systems Command, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-211-8893 has 1 manufacturer part number on file: 5541749-2 (Naval Sea Systems Command).
Key specifications for 5541749-2: Flow Control Device: DISK; First End Thread Direction: RIGHT-HAND; Second End Relationship with First End: NOT IDENTICAL; Second End Thread Class: 2A A. 16 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.