The Valve,pressure Equalizing,gaseou, cataloged under National Stock Number 4820-01-267-5987, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier. Government technical data includes 14 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-267-5987 |
| Primary Part Number | 798AS106-3 |
| Item Name | Valve,pressure Equalizing,gaseou |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| Status | ACTIVE |
| Flow Control Device | DISK, FLAT |
| First End Thread Direction | RIGHT-HAND |
| Body Style | SINGLE CONNECTION, STRAIGHT FLOW |
| First End Style Designator | PLAIN |
| End Connection Quantity | 1 |
| Valve Venting Design Type | ATMOSPHERIC |
| Opening Pressure Setting | ERR-060 |
| Disk Loading Method | SPRING |
| First End Connection Type | THREADED EXTERNAL PIPE |
| Surface Treatment | ANODIZE OUTSIDE |
| First End Nominal Pipe Size Accommodated | 1.050 INCHES IN |
| Material | ALUMINUM ALLOY BODY |
| Media for Which Designed | AIR |
| Valve Relief Design Type | PRESSURE |
| 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 |
|---|---|
| 1596AS243 | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
| 798AS106-3 PRIMARY | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
| TA333-15-15-R | Agm Container Controls Inc Dba Agm Container Controls Inc (USA) |
| 879310-10 | Air Armament Center/ En (USA) |
| Reference | Meaning |
|---|---|
| 932S0102 | C/1 Advisory reference — outside the item-of-supply concept Syn-Tech System, Inc. |
| 798AS106 | 7/1 Vendor item drawing reference Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
NSN 4820-01-267-5987 is a Valve,pressure Equalizing,gaseou, manufactured by Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-267-5987 has 4 manufacturer part numbers on file: 1596AS243 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier), 798AS106-3 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier), TA333-15-15-R (Agm Container Controls Inc Dba Agm Container Controls Inc), 879310-10 (Air Armament Center/ En).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-299-8745. Verify interchangeability with system specifications before substitution.
Key specifications for 798AS106-3: Flow Control Device: DISK, FLAT; First End Thread Direction: RIGHT-HAND; Body Style: SINGLE CONNECTION, STRAIGHT FLOW; First End Style Designator: PLAIN. 14 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.