The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-01-078-9947, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Messer Llc. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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.
| Item Name | Valve,regulating,fluid Pressure |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Messer Llc (CAGE 00741); Controls Corp of America (CAGE 0A389) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-078-9947 |
| Primary Part Number | B49-2500-580 |
| Item Name | Valve,regulating,fluid Pressure |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Messer Llc |
| Status | ACTIVE |
| 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 |
|---|---|
| B49-2500-580 PRIMARY | Messer Llc (USA) |
| 0493-1120-580 PRIMARY | Controls Corp of America (USA) |
| Reference | Meaning |
|---|---|
| 49-2500-580 | 5/9 Secondary reference Messer Llc |
| 04931125 | 5/9 Secondary reference Controls Corp of America |
NSN 4820-01-078-9947 is a Valve,regulating,fluid Pressure, manufactured by Messer Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-078-9947 has 2 manufacturer part numbers on file: B49-2500-580 (Messer Llc), 0493-1120-580 (Controls Corp of America).
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.