The Valve,pressure Equalizing,gaseou, cataloged under National Stock Number 4820-01-355-3196, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is The Boeing Company. Government technical data includes 19 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 | 4820-01-355-3196 |
| Primary Part Number | A15PS418-1 |
| Item Name | Valve,pressure Equalizing,gaseou |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | The Boeing Company |
| Status | ACTIVE |
| Flow Control Device | BALL |
| First End Thread Series Designator | UNIFIED NATIONAL JOINT (UNJ) |
| First End Thread Direction | RIGHT-HAND |
| Temp Rating | 135.0 FAHRENHEIT DEGF |
| Surface Treatment Document and Classification | MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE LOCATION NOT OTHERWISE SPECIFIED |
| Surface Treatment Document and Classification | MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OUTSIDE |
| Body Style | SINGLE CONNECTION, STRAIGHT FLOW |
| First End Seat Angle in Deg | 37.0 |
| First End Thread Class | 3A A |
| First End Style Designator | FLARED |
| End Connection Quantity | 1 |
| Valve Venting Design Type | ATMOSPHERIC |
| First End Connection Type | THREADED EXTERNAL TUBE |
| Surface Treatment | ANODIZE OUTSIDE |
| First End Outside Diameter Tube Accommodated | 1.000 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY BODY |
| Media for Which Designed | HYDROCARBON FUELS AND OILS |
| Valve Relief Design Type | VACUUM |
| First End Nominal Thread Size | 1.312 INCHES IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 870283-101 | Derogene Inc (USA) |
| A15PS418-1 PRIMARY | The Boeing Company (USA) |
NSN 4820-01-355-3196 is a Valve,pressure Equalizing,gaseou, manufactured by The Boeing Company, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-355-3196 has 2 manufacturer part numbers on file: 870283-101 (Derogene Inc), A15PS418-1 (The Boeing Company).
Key specifications for A15PS418-1: Flow Control Device: BALL; First End Thread Series Designator: UNIFIED NATIONAL JOINT (UNJ); First End Thread Direction: RIGHT-HAND; Temp Rating: 135.0 FAHRENHEIT DEGF. 19 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.
NSN 4820-01-355-3196 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.