The Valve,pressure Equalizing,gaseou, cataloged under National Stock Number 4820-01-420-3992, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Agm Container Controls Inc Dba Agm Container Controls Inc. Government technical data includes 13 specifications, 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-420-3992 |
| Primary Part Number | TA770-20-20-R |
| Item Name | Valve,pressure Equalizing,gaseou |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Agm Container Controls Inc Dba Agm Container Controls Inc |
| Status | ACTIVE |
| Flow Control Device | DISK, FLAT |
| First End Thread Series Designator | UNS |
| First End Thread Direction | RIGHT-HAND |
| Body Style | SINGLE CONNECTION STRAIGHT THRU |
| 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 |
| First End Connection Type | THREADED INTERNAL PIPE |
| First End Nominal Pipe Size Accommodated | 2.000 INCHES IN |
| Material | ALUMINUM BODY |
| Valve Relief Design Type | PRESSURE AND VACUUM |
| First End Nominal Thread Size | 2.000 INCHES IN |
| 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 |
|---|---|
| TA770-20-20-R PRIMARY | Agm Container Controls Inc Dba Agm Container Controls Inc (USA) |
NSN 4820-01-420-3992 is a Valve,pressure Equalizing,gaseou, manufactured by Agm Container Controls Inc Dba Agm Container Controls Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-420-3992 has 1 manufacturer part number on file: TA770-20-20-R (Agm Container Controls Inc Dba Agm Container Controls Inc).
Key specifications for TA770-20-20-R: Flow Control Device: DISK, FLAT; First End Thread Series Designator: UNS; First End Thread Direction: RIGHT-HAND; Body Style: SINGLE CONNECTION STRAIGHT THRU. 13 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.