The Air Pressure Rg Val, cataloged under National Stock Number 4820-01-452-9029, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Allclear Aerospace & Defense, Inc. Dba Allclear Aerospace & Defense Inc. The record lists 3 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-452-9029 |
| Primary Part Number | AUTHORIZED DISTRIBUTOR ONLY |
| Item Name | Air Pressure Rg Val |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Allclear Aerospace & Defense, Inc. Dba Allclear Aerospace & Defense Inc |
| Status | ACTIVE |
| 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 |
|---|---|
| AUTHORIZED DISTRIBUTOR ONLY | Allclear Aerospace & Defense, Inc. Dba Allclear Aerospace & Defense Inc (USA) |
| AUTHORIZED DISTRIBUTOR ONLY | Eci Defense Group, Inc. Dba Eci Defense Group Inc (USA) |
| 74B830059-101 | Rogerson Aircraft Equipment Group (USA) |
| Reference | Meaning |
|---|---|
| 10163767 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| V4000-101 | 3/2 Design control — primary reference U.S. Government activity |
| 74B830059-101 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
NSN 4820-01-452-9029 is a Air Pressure Rg Val, manufactured by Allclear Aerospace & Defense, Inc. Dba Allclear Aerospace & Defense Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-452-9029 has 3 manufacturer part numbers on file: AUTHORIZED DISTRIBUTOR ONLY (Allclear Aerospace & Defense, Inc. Dba Allclear Aerospace & Defense Inc), AUTHORIZED DISTRIBUTOR ONLY (Eci Defense Group, Inc. Dba Eci Defense Group Inc), 74B830059-101 (Rogerson Aircraft Equipment Group).
1 possible match (shared part number, not a government interchangeability claim): 4030-01-643-2434. Verify interchangeability with system specifications before substitution.
Key specifications for AUTHORIZED DISTRIBUTOR ONLY: Part Name Assigned by Controlling Agency: VALVE,REGULATING,ABSOLUTE AIR PRESSURE-WAVEGUIDE; End Item Identification: F/A-18 NON HSP. 0 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 4820-01-452-9029 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.