The Valve,pressure Equalizing,gaseou, cataloged under National Stock Number 4820-00-984-6507, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 16 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-984-6507 |
| Item Name | Valve,pressure Equalizing,gaseou |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Flow Control Device | DISK, FLAT |
| First End Thread Direction | RIGHT-HAND |
| Second End Relationship with First End | IDENTICAL |
| Body Style | SINGLE CONNECTION, STRAIGHT FLOW |
| First End Seat Angle in Deg | 37.5 |
| First End Thread Class | 2A A |
| First End Style Designator | GASKET SEAL |
| End Connection Quantity | 2 |
| Operating Pressure | 2.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS |
| Valve Venting Design Type | ATMOSPHERIC |
| Disk Loading Method | SPRING |
| First End Connection Type | THREADED EXTERNAL TUBE |
| First End Outside Diameter Tube Accommodated | 0.875 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY BODY |
| Media for Which Designed | AIR |
| Valve Relief Design Type | PRESSURE AND VACUUM |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| P4-309-3-5-3-5 | 5/9 Secondary reference U.S. Government activity |
| P4-309-3.5-3.5SB | 3/2 Design control — primary reference U.S. Government activity |
NSN 4820-00-984-6507 is a Valve,pressure Equalizing,gaseou, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-00-984-6507: Flow Control Device: DISK, FLAT; First End Thread Direction: RIGHT-HAND; Second End Relationship with First End: IDENTICAL; Body Style: SINGLE CONNECTION, STRAIGHT FLOW. 16 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.
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.