The Valve,vacuum Breaking, cataloged under National Stock Number 4820-01-193-4655, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Fairbanks Morse, Llc. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-01-193-4655 |
| Primary Part Number | 12512961 |
| Item Name | Valve,vacuum Breaking |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Fairbanks Morse, Llc |
| Status | ACTIVE |
| Unable to Decode | UNABLE TO DECODE |
| Material | COPPER ALLOY BODY |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 12512961 | Fairbanks Morse, Llc (USA) |
| Reference | Meaning |
|---|---|
| 12512961 | 3/9 Design control — primary reference U.S. Government activity |
| 12512961 | 5/9 Secondary reference Coltec Industries Inc Dba Fairbanks Morse Engine Fm/alco |
NSN 4820-01-193-4655 is a Valve,vacuum Breaking, manufactured by Fairbanks Morse, Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-193-4655 has 1 manufacturer part number on file: 12512961 (Fairbanks Morse, Llc).
Key specifications for 12512961: Unable to Decode: UNABLE TO DECODE; Material: COPPER ALLOY BODY. 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.
NSN 4820-01-193-4655 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.