The Blow Down Ring, cataloged under National Stock Number 4820-01-303-2067, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Curtiss-Wright Flow Control Corporation Dba Farris Engineering Div Curtiss-Wright Valves Division- Farris. The record lists 4 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | Blow Down Ring |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Bae Systems (operations) Limited (CAGE K0656); Emerson Process Management Ltd (CAGE K0061); Curtiss-Wright Flow Control Corporation Dba Farris Engineering Div Curtiss-Wright Valves Division- Farris (CAGE 72352) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-303-2067 |
| Primary Part Number | 2933-X1-33092 |
| Item Name | Blow Down Ring |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Curtiss-Wright Flow Control Corporation Dba Farris Engineering Div Curtiss-Wright Valves Division- Farris |
| 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 |
|---|---|
| 2933X1-3309-2 | Bae Systems (operations) Limited (GBR) |
| 2933-X1-3309 | Emerson Process Management Ltd (GBR) |
| 2933-X1-33092 PRIMARY | Curtiss-Wright Flow Control Corporation Dba Farris Engineering Div Curtiss-Wright Valves Division- Farris (USA) |
| 2933-X1-33092 | Emerson Process Management Ltd (GBR) |
| Reference | Meaning |
|---|---|
| 2933X1 | 5/1 Secondary reference Bae Systems (operations) Limited |
| 2933-X1 | 5/1 Secondary reference Emerson Process Management Ltd |
| 2933-X1-E | 5/1 Secondary reference Emerson Process Management Ltd |
NSN 4820-01-303-2067 is a Blow Down Ring, manufactured by Curtiss-Wright Flow Control Corporation Dba Farris Engineering Div Curtiss-Wright Valves Division- Farris, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-303-2067 has 4 manufacturer part numbers on file: 2933X1-3309-2 (Bae Systems (operations) Limited), 2933-X1-3309 (Emerson Process Management Ltd), 2933-X1-33092 (Curtiss-Wright Flow Control Corporation Dba Farris Engineering Div Curtiss-Wright Valves Division- Farris), 2933-X1-33092 (Emerson Process Management Ltd).
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.