The Valve,pressure Equalizing,gaseou, cataloged under National Stock Number 4820-01-064-0538, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 18 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-01-064-0538 |
| Item Name | Valve,pressure Equalizing,gaseou |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| First End Thread Direction | RIGHT-HAND |
| Temp Rating | -80.0 FAHRENHEIT AND 160.0 CELSIUS DEGC |
| Surface Treatment Document and Classification | TT-P-636 FED SPEC SINGLE TREATMENT RESPONSE LOCATION NOT OTHERWISE SPECIFIED |
| Surface Treatment Document and Classification | TT-P-636 FED 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 |
| Operating Pressure | 3.5 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS |
| Valve Venting Design Type | ATMOSPHERIC |
| Opening Pressure Setting | ERR-060 |
| First End Connection Type | THREADED EXTERNAL BOSS |
| Surface Treatment | CHROMATE OUTSIDE |
| Material | ALUMINUM ALLOY BODY |
| Material | ALUMINUM ALLOY AND PLASTIC POLYTETRAFLUOROETHYLENE SEAT |
| Media for Which Designed | AIR |
| Furnished Items | MANUAL UNLOADER ON VACUUM SIDE AND NUT AND GASKET AND WASHER |
| Valve Relief Design Type | 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 |
|---|---|
| TA750-VR-20 | 3/9 Design control — primary reference Agm Container Controls Inc Dba Agm Container Controls Inc |
| 2645518-16 | 7/2 Vendor item drawing reference Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
NSN 4820-01-064-0538 is a Valve,pressure Equalizing,gaseou, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-064-0538: First End Thread Direction: RIGHT-HAND; Temp Rating: -80.0 FAHRENHEIT AND 160.0 CELSIUS DEGC; Surface Treatment Document and Classification: TT-P-636 FED SPEC SINGLE TREATMENT RESPONSE LOCATION NOT OTHERWISE SPECIFIED; Surface Treatment Document and Classification: TT-P-636 FED SPEC SINGLE TREATMENT RESPONSE OUTSIDE. 18 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.