The Valve,pressure Equalizing,gaseou, cataloged under National Stock Number 4820-01-138-8953, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Erie Engineered Products Inc. Government technical data includes 12 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-138-8953 |
| Primary Part Number | 461006-01 |
| Item Name | Valve,pressure Equalizing,gaseou |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Erie Engineered Products Inc |
| Status | ACTIVE |
| Flow Control Device | DISK, FLAT |
| First End Thread Direction | RIGHT-HAND |
| Body Style | SINGLE CONNECTION, STRAIGHT FLOW |
| First End Thread Class | 2A A |
| First End Style Designator | PLAIN |
| End Connection Quantity | 1 |
| Operating Pressure | 2.5 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 | 0.625 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY BODY |
| 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 |
|---|---|
| 461006-01 PRIMARY | Erie Engineered Products Inc (USA) |
| Reference | Meaning |
|---|---|
| 40-01006-01 | 5/9 Secondary reference Erie Engineered Products Inc |
| M13-1001 | D/9 Drawing number reference only Erie Engineered Products Inc |
NSN 4820-01-138-8953 is a Valve,pressure Equalizing,gaseou, manufactured by Erie Engineered Products Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-138-8953 has 1 manufacturer part number on file: 461006-01 (Erie Engineered Products Inc).
2 possible matches (shared part number, not a government interchangeability claim): 4820-01-295-7050, 6730-01-462-3768. Verify interchangeability with system specifications before substitution.
Key specifications for 461006-01: Flow Control Device: DISK, FLAT; First End Thread Direction: RIGHT-HAND; Body Style: SINGLE CONNECTION, STRAIGHT FLOW; First End Thread Class: 2A A. 12 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.