The Valve,pressure Equalizing,gaseou, cataloged under National Stock Number 4820-01-071-0103, 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16 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-071-0103 |
| Item Name | Valve,pressure Equalizing,gaseou |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Flow Control Device | PISTON, WEIGHTED TYPE |
| First End Thread Direction | RIGHT-HAND |
| Surface Treatment Document and Classification | MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE LOCATION NOT OTHERWISE SPECIFIED |
| Surface Treatment Document and Classification | MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OUTSIDE |
| Body Style | SINGLE CONNECTION, STRAIGHT FLOW |
| First End Thread Class | 2A A |
| First End Style Designator | EXTERNAL SEAT FOR GASKET SEAL |
| End Connection Quantity | 1 |
| Valve Venting Design Type | ATMOSPHERIC |
| Opening Pressure Setting | ERR-060 |
| Disk Loading Method | SPRING AND WEIGHT |
| First End Connection Type | THREADED EXTERNAL BOSS |
| Surface Treatment | ANODIZE OUTSIDE |
| Material | ALUMINUM ALLOY BODY |
| Media for Which Designed | AIR AND INERT GAS |
| 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 |
|---|---|
| TC78V07-25-25 | 5/9 Secondary reference Ta Instrument Case Co |
| XTC01V07 | 5/9 Secondary reference Ta Instrument Case Co |
| TC78V07-25-25 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4820-01-071-0103 is a Valve,pressure Equalizing,gaseou, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-071-0103: Flow Control Device: PISTON, WEIGHTED TYPE; First End Thread Direction: RIGHT-HAND; Surface Treatment Document and Classification: MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE LOCATION NOT OTHERWISE SPECIFIED; Surface Treatment Document and Classification: MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OUTSIDE. 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.