The Valve,safety Relief, cataloged under National Stock Number 4820-01-183-2191, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Fairbanks Morse, Llc. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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.
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Fairbanks Morse, Llc (CAGE 7PZX0) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-183-2191 |
| Primary Part Number | P12611926N |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Fairbanks Morse, 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 |
|---|---|
| P12611926N PRIMARY | Fairbanks Morse, Llc (USA) |
| Reference | Meaning |
|---|---|
| P12611926N | 3/9 Design control — primary reference U.S. Government activity |
| SVB-3051 | C/1 Advisory reference — outside the item-of-supply concept Ruthman Pump and Engineering Inc Dba Fulflo Specialties Co Div Fulflo Specialties Co. |
NSN 4820-01-183-2191 is a Valve,safety Relief, manufactured by Fairbanks Morse, Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-183-2191 has 1 manufacturer part number on file: P12611926N (Fairbanks Morse, Llc).
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.