The Valve,relief,pressure and Temper, cataloged under National Stock Number 4820-01-159-0443, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Federal Industries, Inc. Dba United Valve Company. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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,relief,pressure and Temper |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Federal Industries, Inc. Dba United Valve Company (CAGE 0TR84); The Boeing Company (CAGE 8V613) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-159-0443 |
| Primary Part Number | 2770103-101 |
| Item Name | Valve,relief,pressure and Temper |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Federal Industries, Inc. Dba United Valve Company |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 2770103-101 | Federal Industries, Inc. Dba United Valve Company (USA) |
| 7-211642032 | The Boeing Company (USA) |
| Reference | Meaning |
|---|---|
| 12C191 | 5/2 Secondary reference U.S. Government activity |
| 2770103-101 | 3/2 Design control — primary reference U.S. Government activity |
| 7-211642032 | 5/9 Secondary reference Mcdonnell Douglas Helicopter Co Inc |
NSN 4820-01-159-0443 is a Valve,relief,pressure and Temper, manufactured by Federal Industries, Inc. Dba United Valve Company, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-159-0443 has 2 manufacturer part numbers on file: 2770103-101 (Federal Industries, Inc. Dba United Valve Company), 7-211642032 (The Boeing Company).
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 4820-01-159-0443 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.