The Diaphragm,actuator Valve,special, cataloged under National Stock Number 4820-01-359-8491, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Pall Aeropower Corporation. Government technical data includes 5 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-359-8491 |
| Primary Part Number | AD-A603-1D31 |
| Item Name | Diaphragm,actuator Valve,special |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Pall Aeropower Corporation |
| Status | ACTIVE |
| Outside Diameter | 1.660 INCHES MINIMUM AND 1.665 INCHES MAXIMUM IN |
| Style Designator | SPECIAL SHAPED |
| Material Document and Classification | QQ-A-250/11, T6 FED SPEC SINGLE MATERIAL RESPONSE |
| Media for Which Designed | AIR |
| Material | ALUMINUM ALLOY 6061 |
| 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 |
|---|---|
| AD-A603-1D31 PRIMARY | Pall Aeropower Corporation (USA) |
| Reference | Meaning |
|---|---|
| 10124723 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 4820-01-359-8491 is a Diaphragm,actuator Valve,special, manufactured by Pall Aeropower Corporation, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-359-8491 has 1 manufacturer part number on file: AD-A603-1D31 (Pall Aeropower Corporation).
Key specifications for AD-A603-1D31: Overall Height: 1.195 INCHES MINIMUM AND 2.205 INCHES MAXIMUM IN; Outside Diameter: 1.660 INCHES MINIMUM AND 1.665 INCHES MAXIMUM IN; Style Designator: SPECIAL SHAPED; Material Document and Classification: QQ-A-250/11, T6 FED SPEC SINGLE MATERIAL RESPONSE. 5 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.