The Valve,ball, cataloged under National Stock Number 4820-01-121-7740, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Siemens Energy, Inc. Dba Dresser-Rand. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Valve,ball |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions (CAGE 8FGX3); Siemens Energy, Inc. Dba Dresser-Rand (CAGE 0AT62) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-121-7740 |
| Primary Part Number | 7079B |
| Item Name | Valve,ball |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Siemens Energy, Inc. Dba Dresser-Rand |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| BX109C | Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions (USA) |
| 7079B PRIMARY | Siemens Energy, Inc. Dba Dresser-Rand (USA) |
| Reference | Meaning |
|---|---|
| 200136ACPC205 | 5/9 Secondary reference U.S. Government activity |
| BX109C | 5/9 Secondary reference Siemens Energy, Inc. Dba Dresser-Rand |
| 7079B | 3/9 Design control — primary reference U.S. Government activity |
NSN 4820-01-121-7740 is a Valve,ball, manufactured by Siemens Energy, Inc. Dba Dresser-Rand, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-121-7740 has 2 manufacturer part numbers on file: BX109C (Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions), 7079B (Siemens Energy, Inc. Dba Dresser-Rand).
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.