The Rv,brs 1,2x3,4npt, cataloged under National Stock Number 4820-01-472-4906, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Fluid Mechanics Valve Company. Government technical data includes 2 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-01-472-4906 |
| Primary Part Number | 42301-3350S1S30-5500-1/2X3/4 |
| Item Name | Rv,brs 1,2x3,4npt |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Fluid Mechanics Valve Company |
| Status | ACTIVE |
| Criticality Code Justification | ZZZY |
| Reference Number Differentiating Characteristics | CLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| 42301-3350S1S30-5500-1/2X3/4 | Fluid Mechanics Valve Company (USA) |
| Reference | Meaning |
|---|---|
| 18N0004 | 3/9 Design control — primary reference Chart Inc Div Distribution and Storage |
| 4230-3750 | 5/9 Secondary reference Oklahoma Safety Equipment Co Inc Dba Oseco Div Oklahoma Safety Equipment Co. (dba Oseco) |
NSN 4820-01-472-4906 is a Rv,brs 1,2x3,4npt, manufactured by Fluid Mechanics Valve Company, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-472-4906 has 1 manufacturer part number on file: 42301-3350S1S30-5500-1/2X3/4 (Fluid Mechanics Valve Company).
Key specifications for 42301-3350S1S30-5500-1/2X3/4: Criticality Code Justification: ZZZY; Reference Number Differentiating Characteristics: CLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D. 2 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.