The Valve,pressure Equalizing,gaseou, cataloged under National Stock Number 4820-01-425-0381, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Hardigg Industries, Llc Div Hardigg Cases. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-425-0381 |
| Primary Part Number | TA333-0.5C-0.5C |
| Item Name | Valve,pressure Equalizing,gaseou |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Hardigg Industries, Llc Div Hardigg Cases |
| Status | ACTIVE |
| Flow Control Device | ANY ACCEPTABLE |
| First End Thread Series Designator | NPSM |
| First End Thread Direction | RIGHT-HAND |
| Body Style | SINGLE CONNECTION, STRAIGHT FLOW |
| First End Style Designator | PLAIN |
| End Connection Quantity | 1 |
| Operating Pressure | 2.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS |
| Valve Venting Design Type | ATMOSPHERIC |
| Opening Pressure Setting | ERR-060 |
| First End Connection Type | THREADED EXTERNAL PIPE |
| Surface Treatment | ANODIZE OUTSIDE |
| First End Nominal Pipe Size Accommodated | 0.750 INCHES IN |
| Material | ALUMINUM BODY |
| Absolute Pressure Setting | 2.0 |
| Valve Relief Design Type | PRESSURE AND VACUUM |
| First End Nominal Thread Size | 0.750 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 |
|---|---|
| TA333-0.5C-0.5C-R | Hardigg Industries, Llc Div Hardigg Cases (USA) |
| TA333-0.5C-0.5C PRIMARY | Hardigg Industries, Llc Div Hardigg Cases (USA) |
NSN 4820-01-425-0381 is a Valve,pressure Equalizing,gaseou, manufactured by Hardigg Industries, Llc Div Hardigg Cases, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-425-0381 has 2 manufacturer part numbers on file: TA333-0.5C-0.5C-R (Hardigg Industries, Llc Div Hardigg Cases), TA333-0.5C-0.5C (Hardigg Industries, Llc Div Hardigg Cases).
Key specifications for TA333-0.5C-0.5C: Flow Control Device: ANY ACCEPTABLE; First End Thread Series Designator: NPSM; First End Thread Direction: RIGHT-HAND; 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.