The Valve,float, cataloged under National Stock Number 4820-01-340-0281, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Atlas Copco. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-01-340-0281 |
| Primary Part Number | 58144601 |
| Item Name | Valve,float |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Atlas Copco |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Style Designator | DROP-IN CARTRIDGE |
| Valve Operation Method | AUTOMATIC |
| 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 |
|---|---|
| 58144601 PRIMARY | Atlas Copco (USA) |
| 855017P0557 | Atlas Copco (USA) |
| Reference | Meaning |
|---|---|
| 855017P0557 | 7/2 Vendor item drawing reference Marine Corps Systems Command Div Marine Corps Systems Command Technical Data Repository Customer Service |
| 58144601 | 5/9 Secondary reference Ingersoll-Rand Co Construction Equipment Group |
NSN 4820-01-340-0281 is a Valve,float, manufactured by Atlas Copco, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-340-0281 has 2 manufacturer part numbers on file: 58144601 (Atlas Copco), 855017P0557 (Atlas Copco).
Key specifications for 58144601: Flow Control Device: DISK; Style Designator: DROP-IN CARTRIDGE; Special Features: 2.400 IN. DIA,6.500 IN. HT IN; End Item Identification: INGERSOLL-RAND ROCK DRILL MODEL 855017A0000. 3 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.