The Valve,pressure Equalizing,gaseou, cataloged under National Stock Number 4820-01-557-7146, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Mbda Uk Ltd. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-01-557-7146 |
| Primary Part Number | C790RPV0505 |
| Item Name | Valve,pressure Equalizing,gaseou |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Mbda Uk Ltd |
| Status | ACTIVE |
| Material | ALUMINUM BODY |
| 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 |
|---|---|
| C790RPV0505 | Mbda Uk Ltd (GBR) |
| Reference | Meaning |
|---|---|
| C790RPV0505 | 3/2 Design control — primary reference U.S. Government activity |
| 790RPV0505 | 5/2 Secondary reference U.S. Government activity |
NSN 4820-01-557-7146 is a Valve,pressure Equalizing,gaseou, manufactured by Mbda Uk Ltd, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-557-7146 has 1 manufacturer part number on file: C790RPV0505 (Mbda Uk Ltd).
Key specifications for C790RPV0505: Special Features: DIAMETER 1.5 INCH HEX IN; Part Name Assigned by Controlling Agency: DUAL ACTION BREATHER VALVE; Material: ALUMINUM BODY. 1 specification is 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.
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.